Document Type Document Type Other income (loss), net Other income (loss), net Other Nonoperating Income (Expense) Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Related Party [Axis] Related Party [Axis] Deferred tax liability Deferred tax liability Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Tax Liabilities Schedule of Intangible Assets Acquired Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] HalioDx Inc. HalioDx Inc. [Member] HalioDx Inc. Write-down of excess supplies Inventory Write-down Statistical Measurement [Domain] Statistical Measurement [Domain] Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Line of credit Line of Credit [Member] Right-of-use assets, financing lease Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financing Lease, Right-Of-Use Asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Financing Lease, Right-Of-Use Asset Deferred tax liability Deferred Income Tax Liabilities, Net Provision of data Biopharmaceutical And Other - Provision of Data [Member] Biopharmaceutical And Other - Provision of Data Security Exchange Name Security Exchange Name French Research Tax Credits Foreign Tax Credit, Policy [Policy Text Block] Foreign Tax Credit, Policy Intangible assets, net Intangible assets, net Intangible Assets, Net (Excluding Goodwill) Selling and Marketing Selling and Marketing Expense [Member] Loss from operations Loss from operations Operating Income (Loss) Total current liabilities Liabilities, Current Increase (decrease) in fair value of accounts receivable acquired Business Combination, Increase (Decrease) In Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Business Combination, Increase (Decrease) In Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Prepaid expenses and other current assets Prepaid Expense and Other Assets, Current Variable Rate [Domain] Variable Rate [Domain] Variable Rate [Axis] Variable Rate [Axis] Cash and Cash Equivalents Cash and Cash Equivalents, Unrestricted Cash and Cash Equivalents, Policy [Policy Text Block] Schedule of Business Acquisitions, by Acquisition [Table] Statement [Table] Schedule of Business Acquisitions, by Acquisition [Table] Commitments and contingencies Commitments and Contingencies Tax portion of vested restricted stock units Share-based Payment Arrangement, Decrease for Tax Withholding Obligation Assets Assets [Abstract] Vesting period of awards granted Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period Acquisition of HalioDx, net of cash acquired Payments to Acquire Business Two, Net of Cash Acquired Restricted Cash Cash and Cash Equivalents, Restricted Cash and Cash Equivalents, Policy [Policy Text Block] Entity Address, State or Province Entity Address, State or Province Cash paid for amounts included in the measurement of lease liabilities Operating Lease, Payments Accounts payable Accounts Payable, Current Effect of foreign currency translation on Goodwill acquired - HalioDx Goodwill, Foreign Currency Translation Gain (Loss) Accumulated deficit Retained Earnings (Accumulated Deficit) Right-of-use assets, operating lease Operating Lease, Right-of-Use Asset HalioDx customer relationships HalioDx Customer Relationships [Member] HalioDx Customer Relationships Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List] 2022 Lessee, Operating Lease, Liability, to be Paid, Year One Options issued and outstanding (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number Property and equipment, net Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment Johnson and Johnson Services, Inc. Johnson and Johnson Services, Inc. [Member] Johnson and Johnson Services, Inc. [Member] 2025 Lessee, Operating Lease, Liability, to be Paid, Year Four Customer [Axis] Customer [Axis] Shares outstanding at beginning of period (in shares) Shares outstanding at end of period (in shares) Shares, Outstanding Preferred stock, $0.001 par value; 5,000,000 shares authorized, 0 shares issued and outstanding as of September 30, 2021 and December 31, 2020 Preferred Stock, Value, Issued Silicon Valley Bank Silicon Valley Bank [Member] Represents Silicon Valley Bank. Schedule of reserved shares of common stock for issuance Schedule of Common Stock Capital Shares Reserved for Future Issuance [Table Text Block] The tabular disclosure for common stock capital shares reserved for future issuance. Other comprehensive loss: Other Comprehensive Income (Loss), Net of Tax [Abstract] Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Other liabilities Other Liabilities, Noncurrent Effect of foreign currency on cash, cash equivalents and restricted cash Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Payments to board of directors members Related Party Transaction, Amounts of Transaction Supplies Inventory, Net Total revenue Revenue Revenue from Contract with Customer, Excluding Assessed Tax Lender Name [Axis] Lender Name [Axis] HalioDx HalioDx [Member] HalioDx SAS Issuance of Common Stock in a Public Offering Stockholders' Equity, Policy [Policy Text Block] Concentration risk Concentration Risk, Percentage LymphMark product technology LymphMark Product Technology [Member] Represents LymphMark product technology. Business Acquisition [Axis] Business Acquisition [Axis] Deferred revenue Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Deferred Revenue Statement [Line Items] Statement [Line Items] Issuance of common stock for acquisition (in shares) Stock Issued During Period, Shares, Acquisitions Schedule of Outstanding Common Stock Equivalents Excluded From Diluted Net Loss Per Common Share Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] Stock-based compensation expense (non-employee) Adjustments To Additional Paid In Capital Share Based Compensation Non Employee Amount of increase In additional paid-in capital (APIC) resulting from non-employee stock-based compensation expense. Prepaids and other current assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets Fair value of free shares modified (in shares) Business Acquisition, Nonvested Aquiree Awards Modified, Fair Value Business Acquisition, Nonvested Aquiree Awards Modified, Fair Value Transaction costs Business Combination, Acquisition Related Costs Acquisition-related contingent consideration, net of current portion Business Combination, Contingent Consideration, Liability, Noncurrent Measurement Input Type [Domain] Measurement Input Type [Domain] Statement [Table] Statement [Table] Stock-based compensation expense (employee) Adjustments To Additional Paid In Capital Share Based Compensation Employee Amount of increase in additional paid-in capital (APIC) resulting from employee stock-based compensation expense. Statistical Measurement [Axis] Statistical Measurement [Axis] Credit Facility [Axis] Credit Facility [Axis] Dr. Tina S. Nova, Ph.D. Dr. Tina S. Nova, Ph.D. [Member] Dr. Tina S. Nova, Ph.D. Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Weighted Average Weighted Average [Member] Non-substantive Employee Non-substantive Employee [Member] Non-substantive Employee Business Combinations [Abstract] Percepta product technology Percepta Product Technology [Member] Percepta Technology [Member] Entity Small Business Entity Small Business Operating income (loss) associated with acquisition Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Pre-combination services associated with options vested Payments For Purchase of Acquiree Vested Awards Business Combination, Consideration Transferred, Liabilities Incurred Associated with Vested Acquiree Awards Number of shares issued in transaction (in shares) Sale of Stock, Number of Shares Issued in Transaction Debt Debt Disclosure [Text Block] Collaborative Arrangement Collaborative Arrangement [Member] Cost of revenue Cost of Revenue Goodwill [Roll Forward] Goodwill [Roll Forward] Amendment Flag Amendment Flag Finite-Lived Intangible Assets, Major Class Name [Domain] Finite-Lived Intangible Assets, Major Class Name [Domain] Balance Sheet Related Disclosures [Abstract] Schedule of Fair Values of Assets Acquired and Liabilities Assumed Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block] Shares available for issuance (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant Accrued other Other Accrued Liabilities, Current Supplies inventory Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory Balance Sheet Components Supplemental Balance Sheet Disclosures [Text Block] Net cash used in operating activities Net Cash Provided by (Used in) Operating Activities Entity Central Index Key Entity Central Index Key Related Party [Domain] Related Party [Domain] Financial Instruments [Domain] Financial Instruments [Domain] Finite-Lived Intangible Assets by Major Class [Axis] Finite-Lived Intangible Assets by Major Class [Axis] Contract manufacturing Biopharmaceutical And Other - Contract Manufacturing [Member] Biopharmaceutical And Other - Contract Manufacturing Term Loan Advance Term Loan Advance [Member] Represents term loan advance. Purchases of property and equipment included in accounts payable and accrued liability Capital Expenditures Incurred but Not yet Paid Thereafter Finite-Lived Intangible Asset, Expected Amortization, after Year Four Finite-Lived Intangible Asset, Expected Amortization, after Year Four Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Restricted cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Cash Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Restricted Cash Net Loss Business Acquisition, Pro Forma Net Income (Loss) HalioDx customer backlog HalioDx Customer Backlog [Member] HalioDx Customer Backlog Long-Lived Tangible Asset [Axis] Long-Lived Tangible Asset [Axis] HalioDx SAS HalioDx SAS [Member] HalioDx SAS Employee stock purchase plan Employee Stock [Member] Income Statement Location [Axis] Income Statement Location [Axis] Issuance of common stock for acquisition Stock Issued During Period, Value, Acquisitions Entity Common Stock, Shares Outstanding (in shares) Entity Common Stock, Shares Outstanding Income Statement Location [Domain] Income Statement Location [Domain] French research tax credits Other Nonoperating Income (Expense), Foreign Tax Credit Foreign Tax Credit, Nonoperating 2023 Lessee, Operating Lease, Liability, to be Paid, Year Two Operating lease liability Increase (Decrease) In Operating Lease Liability Increase (Decrease) In Operating Lease Liability Intangible asset amortization Amortization of Intangible Assets Line of Credit Facility [Table] Line of Credit Facility [Table] Schedule of Operating Lease Expense and Measurement Of Lease Liabilities Lease, Cost [Table Text Block] 2024 Lessee, Operating Lease, Liability, to be Paid, Year Three Organization, Description of Business and Summary of Significant Accounting Policies Business Description and Accounting Policies [Text Block] Other assets Other Assets, Noncurrent Other Other Nonoperating Income (Expense), Other Other Nonoperating Income (Expense), Other Cash and cash equivalents Cash and Cash Equivalents, Fair Value Disclosure Total assets Assets Scenario [Axis] Scenario [Axis] Decipher product technology Decipher BioSciences Product Technology [Member] Decipher BioSciences Product Technology Indefinite-lived intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets Title of 12(b) Security Title of 12(b) Security Schedule of Accrued Liabilities Schedule of Accrued Liabilities [Table Text Block] Nonrecurring post-combination compensation expense associated nonvested options Considerations Payable To Acquiree Nonvested Award Holders Considerations Payable To Acquiree Nonvested Award Holders Total Finite-Lived Intangible Assets, Net Issuance of common stock on exercise of stock options and vesting of restricted stock units (in shares) Share-based Compensation Arrangement By Share-based Payment Award, Options And Non-Option Equity Instruments, Exercises In Period Share-based Compensation Arrangement By Share-based Payment Award, Options And Non-Option Equity Instruments, Exercises In Period Antidilutive Securities [Axis] Antidilutive Securities [Axis] Time deposits Other Assets, Fair Value Disclosure Cost of revenue Cost of Sales [Member] Financing lease liability, net of current portion Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Financing Lease Liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Financing Lease Liability Proceeds from issuance of common stock Sale of Stock, Consideration Received on Transaction Depreciation and amortization Depreciation, Depletion and Amortization Cash and cash equivalents Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents Product and Service [Axis] Product and Service [Axis] Total liabilities Liabilities nCounter Dx license nCounter Dx License [Member] nCounter Dx License [Member] Finance Lease, Liability, Statement of Financial Position [Extensible List] Finance Lease, Liability, Statement of Financial Position [Extensible List] Interest on end-of-term debt obligation Debt Instrument, End Of Term Payment Interest Amount And Prepayment Penalty Debt Instrument, End Of Term Payment Interest Amount And Prepayment Penalty Equity Interest Issued or Issuable, Type [Domain] Equity Interest Issued or Issuable, Type [Domain] Gain (loss) on currency revaluation Other Nonoperating Income (Expense), Foreign Currency Translation Gain (Loss) Foreign Currency Translation Gain (Loss), Nonoperating Less: amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Components of Other Income (Loss) Other Nonoperating Income and Expense [Text Block] Contract with customer, revenue recognized Contract with Customer, Liability, Revenue Recognized Commitments and Contingencies Disclosure [Abstract] Operating lease expense Operating Lease, Expense Headquarters and laboratory facilities, South San Francisco, San Diego, and Austin Headquarters And Laboratory Facilities South San Francisco, San Diego, And Austin [Member] Headquarters And Laboratory Facilities South San Francisco, San Diego, And Austin Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Schedule of Accounts, Notes, Loans and Financing Receivable [Table] Supplies Increase (Decrease) in Inventories Acquisition-related Costs Acquisition-related Costs [Member] Prosigna customer relationships Prosigna Customer Relationships [Member] Represents Prosigna customer relationships. Free Shares Free Ordinary Share Awards [Member] Free Ordinary Share Awards Fair Value, Recurring and Nonrecurring [Table] Fair Value, Recurring and Nonrecurring [Table] Right-of-use assets, operating lease Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-Of-Use Asset Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Operating Lease, Right-Of-Use Asset Restricted cash Restricted cash Long term deposit Restricted Cash and Cash Equivalents, Noncurrent Accounts payable Increase (Decrease) in Accounts Payable Release of valuation allowance Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount Additional Paid-in Capital Additional Paid-in Capital [Member] Probability of achievement Measurement Input, Probability of Achievement [Member] Measurement input using probability of achievement. Schedule of Other Income (Loss), net Schedule of Other Nonoperating Income (Expense) [Table Text Block] Schedule of Purchase Price and Nonrecurring Post-compensation Expense Schedule of Business Acquisitions, by Acquisition [Table Text Block] Nonrecurring Adjustment [Domain] Nonrecurring Adjustment [Domain] Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Class of Stock [Line Items] Class of Stock [Line Items] Percentage of cash consideration holdback placed in escrow Business Combination, Contingent Consideration, Liability, Percentage In Escrow Business Combination, Contingent Consideration, Liability, Percentage In Escrow Adjustments to reconcile net loss to net cash used in operating activities: Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Common stock, shares outstanding (in shares) Common Stock, Shares, Outstanding Income Tax Disclosure [Abstract] Medicare Medicare [Member] Represents Medicare. Revolving Credit Facility Revolving Credit Facility [Member] Schedule of Goodwill [Table] Schedule of Goodwill [Table] Loss before income tax benefit Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Research and development Research and Development Expense Acquisition of Decipher Biosciences, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Common stock, shares authorized (in shares) Common Stock, Shares Authorized Equity interest acquired Business Acquisition, Percentage of Voting Interests Acquired Concentration Risk Type [Axis] Concentration Risk Type [Axis] Issuance of common stock on exercise of stock options and vesting of restricted stock units Share-based Compensation Arrangement By Share-based Payment Award, Value, Options And Non-Option Equity Instruments, Exercises In Period Share-based Compensation Arrangement By Share-based Payment Award, Value, Options And Non-Option Equity Instruments, Exercises In Period Proceeds from the exercise of common stock options and employee stock purchases Proceeds from Stock Options Exercised Dr. Robert S. Epstein, M.D., M.S. Dr. Robert S. Epstein, M.D., M.S. [Member] Dr. Robert S. Epstein, M.D., M.S. Incurred liabilities in acquisition Liabilities incurred Business Combination, Consideration Transferred, Liabilities Incurred Income Statement [Abstract] Income Statement [Abstract] Accumulated Other Comprehensive Loss AOCI Attributable to Parent [Member] Operating lease liability, net of current portion Long-term lease liabilities Operating Lease, Liability, Noncurrent 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Four Prepaid expenses and other current assets Increase (Decrease) in Prepaid Expense and Other Assets Over-Allotment Option Over-Allotment Option [Member] Decipher Biosciences and HalioDX Decipher Biosciences and HalioDX [Member] Decipher Biosciences and HalioDX Fair value of finite-lived intangible assets Finite-lived intangible assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles Use of Estimates Use of Estimates, Policy [Policy Text Block] Current assets: Assets, Current [Abstract] Investing activities Net Cash Provided by (Used in) Investing Activities, Continuing Operations [Abstract] Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Preferred stock, par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Accrued liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Accrued Liabilities Scenario [Domain] Scenario [Domain] Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment City Area Code City Area Code Interest expense Other Nonoperating Income (Expense), Interest Expense Interest Expense, Nonoperating Sale of common stock in a public offering, net of offering costs (in shares) Stock Issued And Sold During Period, Shares, In Private Placement Number of shares issued and sold during the period in a private placement. Document Period End Date Document Period End Date Cash consideration holdback Acquisition-related contingent consideration, net of current portion Business Combination, Contingent Consideration, Liability Total number of shares reserved for issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Security deposit Security Deposit Schedule of Biopharmaceuticals and Other Revenues Disaggregation of Revenue [Table Text Block] End-of-term debt obligation Debt Instrument, End Of Term Payment, Interest Amount Debt Instrument, End Of Term Payment, Interest Amount Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] (Decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Excluding Exchange Rate Effect Long-term Debt, Type [Domain] Long-term Debt, Type [Domain] Stock-based compensation Share-based Payment Arrangement, Noncash Expense Payment of taxes on vested restricted stock units Payment, Tax Withholding, Share-based Payment Arrangement Cover [Abstract] Cover [Abstract] Annual rent Lessee, Operating Lease, Lease Not Yet Commenced, Annual Undiscounted Amount Lessee, Operating Lease, Lease Not Yet Commenced, Annual Undiscounted Amount Measurement Input Type [Axis] Measurement Input Type [Axis] Goodwill acquired Goodwill, Acquired During Period Accounts payable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Accounts Payable Long-term debt balance outstanding Total debt obligation Long-term Debt Goodwill [Line Items] Goodwill [Line Items] Fair Value Disclosures [Abstract] Concentration Risk Benchmark [Axis] Concentration Risk Benchmark [Axis] Total operating expenses Costs and Expenses Milestones Biopharmaceutical And Other - Milestones [Member] Biopharmaceutical And Other - Milestones Equity Components [Axis] Equity Components [Axis] Accounts receivable Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables Minimum Minimum [Member] Total identifiable assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets Periodic payment terms, balloon payment to be paid Debt Instrument, Periodic Payment Terms, Balloon Payment to be Paid Property and equipment, net Property, Plant, and Equipment and Finance Lease Right-of-Use Asset, after Accumulated Depreciation and Amortization Current portion of operating lease liability Less: short-term lease liabilities Operating Lease, Liability, Current Long-term debt Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt Entity Interactive Data Current Entity Interactive Data Current Revenue: Revenues [Abstract] Fair Value Measurements Fair Value Disclosures [Text Block] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Accounts receivable Accounts Receivable [Member] Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] 2021 remainder of year Finite-Lived Intangible Asset, Expected Amortization, Remainder of Fiscal Year Development rights Biopharmaceutical And Other - Development Rights [Member] Biopharmaceutical And Other - Development Rights Customer [Domain] Customer [Domain] Operating Leases Operating Leased Assets [Line Items] Biopharmaceutical and other Biopharmaceutical And Other [Member] Represents biopharmaceutical. Additional paid-in capital Additional Paid in Capital, Common Stock Entity Registrant Name Entity Registrant Name Business Acquisition [Line Items] Statement [Line Items] Business Acquisition [Line Items] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Weighted average discount rate Operating Lease, Weighted Average Discount Rate, Percent Total intangible assets Intangible Assets, Gross (Excluding Goodwill) Revaluation of acquisition-related contingent consideration Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability Research and Development Research and Development Expense [Member] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Accounts receivable Accounts Receivable, after Allowance for Credit Loss, Current Total future minimum lease payments Lessee, Operating Lease, Liability, to be Paid Defined Benefit Plan, Type [Extensible List] Defined Benefit Plan, Type [Extensible List] Shares issued, price per share (in USD per share) Shares Issued, Price Per Share Adjustments for New Accounting Pronouncements [Axis] Accounting Standards Update [Axis] Foreign Currency Translation Foreign Currency Transactions and Translations Policy [Policy Text Block] Sale of Stock [Axis] Sale of Stock [Axis] Entity Address, Postal Zip Code Entity Address, Postal Zip Code Fair Value Measurement Inputs and Valuation Techniques [Table] Fair Value Measurement Inputs and Valuation Techniques [Table] Concentrations of Credit Risk and Other Risks and Uncertainties Concentrations of Credit and Other Risks and Uncertainties [Policy Text Block] Disclosure of accounting policy for concentrations of credit risk and other risks and uncertainties. Goodwill Goodwill at beginning of period Goodwill at end of period Goodwill Goodwill Fair Value Measurement Inputs and Valuation Techniques Fair Value Measurement Inputs and Valuation Techniques [Table Text Block] Noncash lease expense Noncash Lease Expense The noncash portion of lease expense. Other comprehensive loss Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent Document Transition Report Document Transition Report Title of Individual [Axis] Title of Individual [Axis] Purchase of equity securities Payments to Acquire Long-term Investments Current portion of acquisition-related contingent consideration Short term contingent considerations Business Combination, Contingent Consideration, Liability, Current Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Collaborative Arrangement and Arrangement Other than Collaborative [Domain] Debt principal Debt Instrument, Face Amount Document Quarterly Report Document Quarterly Report Measurement input Business Combination, Contingent Consideration, Liability, Measurement Input Schedule of Goodwill Schedule of Goodwill [Table Text Block] Equity [Abstract] Increase (decrease) in goodwill acquired, corresponding to accounts receivable remeasurement Goodwill, Period Increase (Decrease), Resulting From Remeasurement Of Receivables Goodwill, Period Increase (Decrease), Resulting From Remeasurement Of Receivables Issuance costs Adjustments to Additional Paid in Capital, Stock Issued, Issuance Costs Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Schedule of Intangible Assets Schedule of Intangible Assets and Goodwill [Table Text Block] Current portion of deferred revenue Contract with Customer, Liability, Current Accrued liabilities and deferred revenue Increase (Decrease) In Accrued Liabilities And Deferred Revenue Increase (Decrease) In Accrued Liabilities And Deferred Revenue Customer concentration risk Customer Concentration Risk [Member] Credit Facility [Domain] Credit Facility [Domain] Schedule of Estimated Future Aggregate Amortization Expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Shares used to compute net loss per common share, diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Net loss per common share, basic (in USD per share) Earnings Per Share, Basic Other Income and Expenses [Abstract] Number of operating segments Number of Operating Segments Entity File Number Entity File Number Debt Disclosure [Abstract] Weighted average remaining lease term Operating Lease, Weighted Average Remaining Lease Term Selling and marketing Selling and Marketing Expense HalioDx developed technology HalioDX Developed Technology [Member] HalioDX Developed Technology Operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Operating lease liability, net of current portion Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Operating Lease Liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Operating Lease Liability Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Payment of long-term debt Payment of long-term debt Repayments of Long-term Debt Stock-based compensation expense Share-based Payment Arrangement, Expense Thereafter Lessee, Operating Lease, Liability, To Be Paid, Due After Year Four Lessee, Operating Lease, Liability, To Be Paid, Due After Year Four Issuance of common stock under employee stock purchase plan (ESPP) Stock Issued During Period, Value, Employee Stock Purchase Plan Off-Market Favorable Lease Off-Market Favorable Lease [Member] Common stock, $0.001 par value; 125,000,000 shares authorized, 71,032,336 and 58,200,526 shares issued and outstanding as of September 30, 2021 and December 31, 2020, respectively Common Stock, Value, Issued Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Document Fiscal Year Focus Document Fiscal Year Focus 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Two Shares of common stock subject to outstanding options Employee And Non Employee Stock Option [Member] An arrangement whereby an employee or non-employee is entitled to receive in the future, subject to vesting and other restrictions, number of shares in the entity at a specified price, as defined in the agreement. Pension obligation Defined Benefit Plan, Benefit Obligation Entity Current Reporting Status Entity Current Reporting Status Customers Representing >10% Of Total Revenue Major Customers [Member] Major Customers Schedule of Long-term Debt Instruments [Table] Schedule of Long-term Debt Instruments [Table] Line of Credit Facility, Lender [Domain] Line of Credit Facility, Lender [Domain] Net identifiable assets acquired Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net Schedule of Operating Leased Assets [Table] Schedule of Operating Leased Assets [Table] Common stock, shares issued (in shares) Common Stock, Shares, Issued Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Present value of future lease payments Operating Lease, Liability Long-term debt Long-term Debt, Excluding Current Maturities Accounts receivable Increase (Decrease) in Accounts Receivable Debt Instrument [Line Items] Debt Instrument [Line Items] Statement of Comprehensive Income [Abstract] Total stockholders’ equity Stockholders' equity at beginning of period Stockholders' equity at end of period Stockholders' Equity Attributable to Parent Payments of stock issuance costs Payments of Stock Issuance Costs Concentration Risk Type [Domain] Concentration Risk Type [Domain] Cash paid in acquisition Considerations paid in acquisition Cash paid in acquisition Business Combination, Consideration Transferred Total liabilities and stockholders’ equity Liabilities and Equity Shares transferred in acquisition (in shares) Business Acquisition, Equity Interest Issued or Issuable, Number of Shares ASU 2014-09 Accounting Standards Update 2014-09 [Member] Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Income Taxes Income Tax Disclosure [Text Block] Entity Address, City or Town Entity Address, City or Town Schedule of the Company's Third-party Payers Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Pre-combination services associated with free shares modified Share-based Payment Arrangement, Plan Modification, Incremental Cost Unvested free shares modified (in shares) Business Acquisition, Nonvested Aquiree Awards Modified Business Acquisition, Nonvested Aquiree Awards Modified Accrued compensation expenses Employee-related Liabilities, Current Restricted stock units Restricted Stock Units (RSUs) [Member] Collaborative agreement contingent receivable amount Collaborative Agreement Contingent Receivable Amount The amount of contingent receivable under the collaborative agreement. Bank Time Deposits Bank Time Deposits [Member] Total purchase price Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net General and administrative General and Administrative Expense Debt Payment Tranche [Domain] Debt Payment Tranche [Domain] [Domain] for Debt Payment Tranche [Axis] Financial Instrument [Axis] Financial Instrument [Axis] Type of Adoption [Domain] Accounting Standards Update [Domain] Nonrecurring Adjustment [Axis] Nonrecurring Adjustment [Axis] Shares of common stock subject to outstanding options (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Debt prepayment tranche three Debt Prepayment Tranche Three [Member] Debt Prepayment Tranche Three [Member] Line of Credit Facility [Line Items] Line of Credit Facility [Line Items] Product Product [Member] Contract agreement receivable for services Contract Agreement Receivable For Services Contract Agreement Receivable For Services Weighted Average Amortization Period (Years) Estimated useful life Finite-Lived Intangible Asset, Useful Life Equity Component [Domain] Equity Component [Domain] Other assets Increase (Decrease) in Other Noncurrent Assets 2024 Finite-Lived Intangible Asset, Expected Amortization, Year Three Entity Tax Identification Number Entity Tax Identification Number Revenue Recognition and Cost of Revenue Revenue from Contract with Customer [Policy Text Block] Net loss Net loss Net loss Net Income (Loss) Attributable to Parent Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Other assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Assets Current portion of other liabilities Other Liabilities, Current Remainder of 2021 Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year London Interbank Offered Rate (LIBOR) London Interbank Offered Rate (LIBOR) [Member] Intangible asset acquired Number of Intangible Assets Acquired Number of Intangible Assets Acquired Sale of common stock in a public offering, net of offering costs Stock Issued And Sold During Period Value In Private Placement Value of shares issued and sold during the period in a private placement. Interest income Other Nonoperating Income (Expense), Interest Income Other Nonoperating Income (Expense), Interest Income Decipher Biosciences Decipher Biosciences [Member] Decipher Biosciences Acquisition Long-term Debt, Type [Axis] Long-term Debt, Type [Axis] Total current assets Assets, Current Current Fiscal Year End Date Current Fiscal Year End Date Operating expenses: Operating Expenses [Abstract] Earnings Per Share [Abstract] Finance lease liabilities Finance Lease, Liability Outstanding shares of common stock equivalents that have been excluded from diluted net loss per common share Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Common Stock Common Stock [Abstract] No definition available. Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Additional cash to be paid Business Combination, Contingent Consideration, Cash To Be Paid Business Combination, Contingent Consideration, Cash To Be Paid Document Fiscal Period Focus Document Fiscal Period Focus Stock-based compensation expense (ESPP) Adjustments To Additional Paid In Capital Share Based Compensation ESPP Amount of increase in additional paid-in capital (APIC) resulting from ESPP stock-based compensation expense. Term of lease Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table] Business Acquisition, Pro Forma Information, Nonrecurring Adjustments [Table] Deferred revenue, net of current portion Contract with Customer, Liability, Noncurrent Decipher trade names Decipher Biosciences Trade Names [Member] Decipher Biosciences Trade Names Supplementary cash flow information: Supplemental Cash Flow Information [Abstract] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Issuance of common stock under ESPP (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Entity Filer Category Entity Filer Category Common Stock Common Stock [Member] Product and Service [Domain] Product and Service [Domain] Long-Lived Tangible Asset [Domain] Long-Lived Tangible Asset [Domain] Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Secured Debt Secured Debt [Member] Future minimum lease payments under non-cancelable operating leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Current portion of operating lease liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Current Operating Lease Liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Current Operating Lease Liability Gross Carrying Amount Finite-Lived Intangible Assets, Gross Revenue Revenue Benchmark [Member] Interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Money Market Funds Money Market Funds [Member] Acquired Indefinite-lived Intangible Assets [Line Items] Acquired Indefinite-lived Intangible Assets [Line Items] NanoString NanoString [Member] Represents NanoString. Development services Biopharmaceutical And Other - Development Services [Member] Biopharmaceutical And Other - Development Services Net (decrease) increase in cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Business Combinations Business Combination Disclosure [Text Block] Finance right-of-use assets Finance Lease, Right-of-Use Asset, after Accumulated Amortization Schedule of Future Minimum Lease Payments Under Non-cancelable Operating Leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Options Share-based Payment Arrangement, Option [Member] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Issuance of common stock for acquisition of HalioDx Stock Issued Shares used to compute net loss per common share, basic (in shares) Weighted Average Number of Shares Outstanding, Basic Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Testing Testing [Member] Represents testing. Change in currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Sale of Stock [Domain] Sale of Stock [Domain] Scenario, Plan Scenario, Plan [Member] Required service period associated with cash consideration holdback Deferred Compensation Arrangement with Individual, Requisite Service Period Termination fee on loan, percentage of revolving line of credit Debt Instrument, Early Termination Fee, Percentage Debt Face Amount Debt Instrument, Early Termination Fee, Percentage Debt Face Amount Interest paid on debt Interest Paid, Excluding Capitalized Interest, Operating Activities Provision of Data Provision of Data [Member] Provision of Data [Member] Proceeds from the issuance of common stock in a public offering, net of issuance costs Proceeds from Issuance Initial Public Offering Facilities in Marseille, France Facilities in Marseille, France [Member] Facilities in Marseille, France 2022 Finite-Lived Intangible Asset, Expected Amortization, Year One Effect of foreign currency on operations Foreign Currency Transaction Gain (Loss), before Tax Income tax benefit Income Tax Expense (Benefit) Cash, cash equivalents and restricted cash at beginning of period Cash, cash equivalents and restricted cash at end of period Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Title of Individual [Domain] Title of Individual [Domain] Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Net loss per common share, diluted (in USD per share) Earnings Per Share, Diluted Local Phone Number Local Phone Number Equity Interest Type [Axis] Equity Interest Type [Axis] Schedule of Supplemental Pro Forma Information Business Acquisition, Pro Forma Information [Table Text Block] Cash considerations paid in acquisition Cash transferred Payments to Acquire Businesses, Gross Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Common stock transferred Value of shares issued in acquisition Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Schedule of net debt obligations Schedule of Debt [Table Text Block] Revenues associated with acquisition Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual Acceleration and cash settlement of unvested acquiree employee stock awards Share-based Payment Arrangement, Accelerated Cost Prepayment premium Debt Instrument, Prepayment Premium The amount of prepayment premium under the debt instrument. Entity Address, Address Line One Entity Address, Address Line One Entity Address, Address Line Two Entity Address, Address Line Two Deferred revenue Contract with Customer, Liability Entity Emerging Growth Company Entity Emerging Growth Company Indefinite-lived intangible assets Indefinite-lived Intangible Assets (Excluding Goodwill) Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Total revenues Business Acquisition, Pro Forma Revenue Benefit from income taxes Deferred Income Tax Expense (Benefit) Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Table] Indefinite-lived Intangible Assets Acquired as Part of Business Combination [Table] Award Type [Axis] Award Type [Axis] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Maximum Maximum [Member] Pension Liability Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Fair value of awards granted Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Nonvested Current portion of financing lease liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Current Financing Lease Liability Business Combination, Recognized Identifiable Asset Acquired and Liability Assumed, Current Financing Lease Liability Accumulated Deficit Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Debt Prepayment Tranche [Axis] Debt Prepayment Tranche [Axis] Debt Prepayment Tranche [Axis] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Award Type [Domain] Award Type [Domain] Proceeds from sale of equity securities Proceeds from Divestiture of Interest in Subsidiaries and Affiliates Trading Symbol Trading Symbol Contract testing Biopharmaceutical And Other - Contract Testing [Member] Biopharmaceutical And Other - Contract Testing Early termination fee on loan Debt Instrument, Early Termination Fee Debt Instrument, Early Termination Fee Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items] Net Loss Per Common Share Earnings Per Share [Text Block] Prosigna product technology Developed Product Technology [Member] Developed Product Technology Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities: Liabilities, Current [Abstract] UnitedHealthcare United Healthcare [Member] Represents United Healthcare. Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Discount rate Measurement Input, Discount Rate [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]