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These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Maximum annual increase as a percentage in outstanding shares on the last day of the preceding fiscal year Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Outstanding Stock Maximum Schedule of finite-lived intangible assets Schedule of Intangible Assets and Goodwill [Table Text Block] Current portion of deferred revenue Contract with Customer, Liability, Current Subsequent Event [Line Items] Subsequent Event [Line Items] Granted (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price Revenue concentration risk Customer Concentration Risk [Member] Options vested and expected to vest at the end of the period (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Number Credit Facility [Domain] Credit Facility [Domain] Schedule of future aggregate amortization expense Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] Collaboration Collaboration [Member] Collaboration [Member] Weighted-average expected term (in years) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term Number of operating segments Number of Operating Segments Entity File Number Entity File Number Debt Disclosure [Abstract] Debt Disclosure [Abstract] Selling and marketing Selling and Marketing Expense Operating activities Net Cash Provided by (Used in) Operating Activities, Continuing Operations [Abstract] Amortization and write-off of debt discount and issuance costs Amortization of Debt Issuance Costs and Discounts Net cash provided by financing activities Net Cash Provided by (Used in) Financing Activities Payment of long-term debt Repayments of long-term debt Repayments of Long-term Debt Share-based compensation expense Share-based Payment Arrangement, Expense Thyroid Cytopathology Partners Thyroid Cytopathology Partners Unrecognized tax benefits Unrecognized tax benefits, beginning of period Unrecognized tax benefits, end of period Unrecognized Tax Benefits Issuance of common stock under employee stock purchase plan (ESPP) Stock Issued During Period, Value, Employee Stock Purchase Plan Counterparty Name [Axis] Counterparty Name [Axis] Common stock, $0.001 par value; 125,000,000 shares authorized, 58,200,526 and 49,625,341 shares issued and outstanding as of December 31, 2020 and 2019, respectively Common Stock, Value, Issued Finite-Lived Intangible Assets [Line Items] Finite-Lived Intangible Assets [Line Items] Finite-lived intangible assets, impairment Impairment of Intangible Assets, Finite-lived Document Fiscal Year Focus Document Fiscal Year Focus Document Annual Report Document Annual Report 2022 Finite-Lived Intangible Asset, Expected Amortization, Year Two Options vested and exercisable at the end of the period Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value Cash and Cash Equivalents [Axis] Cash and Cash Equivalents [Axis] 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. Entity Current Reporting Status Entity Current Reporting Status Retirement Benefits [Abstract] Retirement Benefits [Abstract] Purchase period Share-based Compensation Arrangement by Share-based Payment Award, Purchase Period The purchase period under the plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Subsequent Event [Table] Subsequent Event [Table] Selected Quarterly Financial Data (Unaudited) Selected Quarterly Financial Information [Abstract] Net Loss per Common Share Earnings Per Share, Policy [Policy Text Block] 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] Expiration period after termination of service Share Based Compensation Arrangement by Share Based Payment Award Award Expiration Period After Termination Expiration period of award after termination of service, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. 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, at Carrying Value Maximum fair market value of shares available to purchase per calendar year Share-based Compensation Arrangement by Share-based Payment Award, Maximum Value of Shares Per Employee The maximum fair market value of shares an employee can purchase under the plan per calendar year. Sublease income Other Income Rent Reimbursement Amount of reimbursement from third party for rent and related operating expenses for shared space included in other income in the income statement. Present value of future lease payments Operating Lease, Liability Net deferred tax liabilities Deferred Tax Liabilities, Net Period director must serve as board of director to receive grant to purchase shares Share Based Compensation Arrangement by Share based Payment Award Period for Which Director Has to Serve as Board of Director to Receive Grant to Purchase Shares Represents the period for which director has to serve as board of director to receive grant to purchase shares. Long-term debt Long-term Debt, Excluding Current Maturities Accounts receivable Increase (Decrease) in Accounts Receivable Debt Instrument [Line Items] Debt Instrument [Line Items] Maximum offering period Share-based Compensation Arrangement by Share-based Payment Award, Offering Period, Maximum The maximum offering period under the plan, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Total stockholders' equity Beginning balance Ending balance Stockholders' Equity Attributable to Parent Payments of stock issuance costs Payments of Stock Issuance Costs Foreign rate differential Effective Income Tax Rate Reconciliation, Foreign Income Tax Rate Differential, Amount Voting power of person owning stock Share Based Compensation Arrangement by Share Based Payment Award Percentage of Voting Power of All Classes of Stock Voting power of all classes of stock, as a percent, of person owning stock as threshold for option terms under the entity's stock option plan. Cash paid in acquisition Business Combination, Consideration Transferred Concentration Risk Type [Domain] Concentration Risk Type [Domain] Outside director who was not previously an employee Outside Director Who Was Not Previously Employee [Member] Represents information pertaining to outside director, who was not previously an employee. Total liabilities and stockholders' equity Liabilities and Equity ASU 2014-09 Accounting Standards Update 2014-09 [Member] 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 as a percentage of total Schedules of Concentration of Risk, by Risk Factor [Table Text Block] Accrued compensation expense Employee-related Liabilities, Current Fair Value Hierarchy and NAV [Axis] Fair Value Hierarchy and NAV [Axis] 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. Lapse of statute of limitations Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations 2025 Lessee, Operating Lease, Liability, to be Paid, Year Five Net assets acquired 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] 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] Headquarters and laboratory facilities, South San Francisco, Lease signed in April 2015 Headquarters And Laboratory Facilities South San Francisco Lease Two [Member] Represents the lease for headquarters and laboratory space in South San Francisco, California that expires March 2026. Product Product revenue Product [Member] Gain on disposal of property and equipment Gain (Loss) on Disposition of Property Plant Equipment Gross increases—current period tax position Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions Gross increases—tax position in prior period Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions Contract agreement receivable for services Contract Agreement Receivable For Services Contract Agreement Receivable For Services Weighted Average Amortization Period (Years) Finite-Lived Intangible Asset, Useful Life Equity Component [Domain] Equity Component [Domain] Other assets Increase (Decrease) in Other Noncurrent Assets Property and equipment, net Total property and equipment, net Property, Plant and Equipment, Net 2023 Finite-Lived Intangible Asset, Expected Amortization, Year Three Construction-in-process Construction in Progress [Member] Entity Tax Identification Number Entity Tax Identification Number Number of major financial institutions Number of Major Financial Institutions with which Cash and Cash Equivalents Deposited Represents the number of major financial institutions, with which cash and cash equivalents are deposited by the entity. Revenue Recognition and Cost of Revenue Revenue from Contract with Customer [Policy Text Block] Stock Incentive Plans Share-based Payment Arrangement [Text Block] Net loss and comprehensive loss Net loss and comprehensive loss Net loss Net Income (Loss) Attributable to Parent Changes in operating assets and liabilities: Increase (Decrease) in Operating Capital [Abstract] Schedule of Variable Interest Entities [Table] Schedule of Variable Interest Entities [Table] LIBOR London Interbank Offered Rate (LIBOR) [Member] 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. Decipher Biosciences Decipher Biosciences [Member] Decipher Biosciences 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] Net operating loss carryforwards Operating Loss Carryforwards Earnings Per Share [Abstract] Earnings Per Share [Abstract] Schedule of significant components of the Company's deferred tax assets and liabilities Schedule of Deferred Tax Assets and Liabilities [Table Text Block] 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] Capital lease accumulated depreciation Finance Lease, Right-of-Use Asset, Accumulated Amortization Common Stock Common Stock [Abstract] No definition available. Accrued liabilities, deferred revenue and deferred rent Increase (Decrease) in Accrued Liabilities, Deferred Revenue, and Deferred Rent The increase (decrease) during the reporting period in the amount of expenses incurred but not yet paid and deferred rent. Stockholders' equity: Stockholders' Equity Attributable to Parent [Abstract] Stock Options Outstanding and Unvested Stock Units Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] 2025 Finite-Lived Intangible Asset, Expected Amortization, Year Five 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. Deferred revenue, net of current portion Contract with Customer, Liability, Noncurrent Supplementary cash flow information: Supplemental Cash Flow Information [Abstract] Business Acquisition, Acquiree [Domain] Business Acquisition, Acquiree [Domain] Issuance of common stock under employee stock purchase plan (ESPP) (in shares) Stock Issued During Period, Shares, Employee Stock Purchase Plans Entity Filer Category Entity Filer Category Schedule of share-based compensation expense Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] Common Stock Common Stock Common Stock [Member] Property and Equipment, Net Property, Plant and Equipment [Line Items] Product and Service [Domain] Product and Service [Domain] Property, Plant and Equipment, Type [Domain] Long-Lived Tangible Asset [Domain] Proceeds from legal settlement regarding short-swing profits Proceeds From Legal Settlement Regarding Short-Swing Profits Proceeds From Legal Settlement Regarding Short-Swing Profits Discount rate Lessee, Operating Lease, Discount Rate Depreciation and amortization expense Depreciation and Amortization of Tangible Assets Depreciation and Amortization of Tangible Assets Shares granted as initial grant (in shares) Share Based Compensation Arrangement by Share Based Payment Award Options Initial Grants Gross number of share options (or share units) granted to each individual as an initial grant. Concentration Risk Benchmark [Domain] Concentration Risk Benchmark [Domain] Risk-free maximum interest rate (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate, Maximum Employer contributions to the plan Defined Contribution Plan, Cost Schedule of property and equipment Property, Plant and Equipment [Table Text Block] Lease Contractual Term [Axis] Lease Contractual Term [Axis] Secured Debt Secured Debt [Member] Future minimum lease payments under non-cancelable operating leases Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract] Shares Available for Grant Share Based Compensation Arrangement by Share Based Payment Award Number of Shares Available for Grant [Roll Forward] Leasehold improvements Leasehold Improvements [Member] Gross Carrying Amount Finite-Lived Intangible Assets, Gross Revenue Revenue Benchmark [Member] Unusual or Infrequent Item, or Both [Domain] Unusual or Infrequent Item, or Both [Domain] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Interest rate, stated percentage Debt Instrument, Interest Rate, Stated Percentage Money Market Funds Money Market Funds [Member] 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 Accumulated depreciation and amortization Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment Options vested and expected to vest at the end of the period Intrinsic value of stock options outstanding Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Aggregate Intrinsic Value Supplementary cash flow information of non-cash investing and financing activities: Noncash Investing and Financing Items [Abstract] Exercised (in shares) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period Net 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 Combination Business Combination Disclosure [Text Block] Schedule of future minimum lease payments under non-cancelable operating leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Reconciliation of tax expense computed at the statutory federal rate and the Company's tax expense Effective Income Tax Rate Reconciliation, Amount [Abstract] Employee stock options Share-based Payment Arrangement, Option [Member] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Basis spread on variable rate Debt Instrument, Basis Spread on Variable Rate Risk-free interest rate Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate Testing Testing [Member] Testing [Member] Subsequent Events [Abstract] Subsequent Events [Abstract] Canceled (in USD per share) Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price Sale of Stock [Domain] Sale of Stock [Domain] Number of additional shares reserved for issuance (in shares) Common Stock Capital Additional Shares Reserved for Future Issuance Aggregate number of additional common shares reserved for future issuance under the plan. Plan Name [Domain] Plan Name [Domain] Entity Well-known Seasoned Issuer Entity Well-known Seasoned Issuer Non deductible officers' compensation Effective Income Tax Rate Reconciliation, Nondeductible Expense, Officer Compensation, Amount Effective Income Tax Rate Reconciliation, Nondeductible Expense, Officer Compensation, Amount Dividends declared Dividends Payable Cash paid for interest on debt Interest Paid, Excluding Capitalized Interest, Operating Activities Provision of Data Provision of Data [Member] Provision of Data [Member] Weighted-average maximum volatility (as a percent) Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum Investment in MAVIDx Equity Securities without Readily Determinable Fair Value, Amount Proceeds from issuance of common stock in a public offering, net of issuance costs Proceeds from Issuance Initial Public Offering Aggregate Intrinsic Value of Stock Options Share Based Compensation Arrangement by Share Based Payment Award Options Aggregate Intrinsic Value [Abstract] 2021 Finite-Lived Intangible Asset, Expected Amortization, Year One Effect of foreign currency on operations Foreign Currency Transaction Gain (Loss), before Tax Income tax expense (benefit) Total Income Tax Expense (Benefit) Cash, cash equivalents and restricted cash at beginning of year Cash, cash equivalents and restricted cash at end of year Total cash, cash equivalents and restricted cash Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents Property and Equipment Property, Plant and Equipment, Policy [Policy Text Block] Stock-based Compensation, employees Employee Stock Option Excluding Bonus Compensation [Member] An arrangement whereby an employee is entitled to receive in the future, subject to vesting and other restrictions, a number of shares in the entity at a specified price, as defined in the agreement, excluding options granted as bonus compensation. Legal settlement from short-swing profits, net of tax Legal Settlement Regarding Short-Swing Profits, Net Of Tax Legal Settlement Regarding Short-Swing Profits, Net Of Tax Title of Individual [Domain] Title of Individual [Domain] Accrued liabilities Total accrued liabilities Accrued Liabilities, Current Thyroid Cytopathology Partners Variable Interest Entity [Line Items] Local Phone Number Local Phone Number Equity Interest Type [Axis] Equity Interest Type [Axis] Unaudited pro forma revenue information Business Acquisition, Pro Forma Information [Table Text Block] Cash paid for acquisition Cash paid for acquisition Payments to Acquire Businesses, Gross Schedule of reconciliation of unrecognized tax benefits Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block] Amount of space leased (in square feet) Lessee Leasing Arrangements, Operating Leases, Space Leased Amount of space leased under the terms of the agreement. Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Collaborative Arrangement and Arrangement Other than Collaborative [Axis] Schedule of Stock by Class [Table] Schedule of Stock by Class [Table] Shares issued for purchase consideration for a business combination Value of shares issued in acquisition Business Combination, Consideration Transferred, Equity Interests Issued and Issuable Intrinsic value of stock options exercised Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value Schedule of net debt obligation Schedule of Debt [Table Text Block] Impairment loss Equity Securities without Readily Determinable Fair Value, Impairment Loss, Annual Amount Prepayment premium Debt Instrument, Prepayment Premium Amount of prepayment premium waived. Commercial and Development Rights Commercial and Development Rights [Member] Commercial and Development Rights Entity Address, Address Line One Entity Address, Address Line One Gross decreases—tax position in prior period Unrecognized Tax Benefits, Decrease Resulting from Prior Period Tax Positions Tax credits Effective Income Tax Rate Reconciliation, Tax Credit, Amount Entity Address, Address Line Two Entity Address, Address Line Two Restricted Cash Restricted Cash and Investments [Abstract] Deferred revenue Contract with Customer, Liability 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 Entity Emerging Growth Company Entity Emerging Growth Company Schedule of Finite-Lived Intangible Assets [Table] Schedule of Finite-Lived Intangible Assets [Table] Total revenue Business Acquisition, Pro Forma Revenue Percepta product technology Percepta Technology [Member] Percepta Technology [Member] Option price as a percentage of estimated fair value of shares to person owning more than 10% of voting power stock Share based Compensation Arrangement by Share based Payment Award Purchase Price of Stock Percentage for Grants to Persons Who Owned Specified Percentage of Class of Stock Option price as a percentage of estimated fair value of shares on date of grant to a person owning stock representing specified percentage of voting power of all classes of stock. Laboratory facilities, Austin, Texas Laboratory Facilities Austin Texas [Member] Represents the lease for laboratory facilities in Austin, Texas that expires July 2018. Research and development credits Deferred Tax Assets Tax Credit Carryforwards Research and Development Represents the amount before allocation of valuation allowances of deferred tax asset attributable to deductible research and development tax credit carryforwards. Deferred tax assets: Components of Deferred Tax Assets Non Current [Abstract] Line of credit facility, maximum borrowing capacity Line of Credit Facility, Maximum Borrowing Capacity Award Type [Axis] Award Type [Axis] Goodwill Goodwill, Impaired [Abstract] Accumulated Amortization Finite-Lived Intangible Assets, Accumulated Amortization Lease Contractual Term [Domain] Lease Contractual Term [Domain] Maximum Maximum [Member] Preferred stock, shares authorized (in shares) Preferred Stock, Shares Authorized Stock-based compensation Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Share-based Compensation Cost Accumulated Deficit Retained Earnings [Member] Preferred stock, shares outstanding (in shares) Preferred Stock, Shares Outstanding Schedule of interest expense on debt Interest Income and Interest Expense Disclosure [Table Text Block] 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] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Net cash used in investing activities Net Cash Provided by (Used in) Investing Activities Remaining contractual life of stock options at beginning and end of period Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Award Type [Domain] Award Type [Domain] Trading Symbol Trading Symbol Options vested and exercisable at the end of the period (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Net Loss Per Share Earnings Per Share [Text Block] Prosigna product technology Prosigna product technology Developed Product Technology [Member] Developed Product Technology [Member] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Current liabilities: Liabilities, Current [Abstract] United Healthcare United Healthcare [Member] Represents information pertaining to United Healthcare, a significant third-party payer. Financing activities Net Cash Provided by (Used in) Financing Activities, Continuing Operations [Abstract] Entity Shell Company Entity Shell Company Options vested and expected to vest at the end of the period (in USD per share) Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Exercise Price Segment Reporting Segment Reporting, Policy [Policy Text Block] Recent Accounting Pronouncements New Accounting Pronouncements, Policy [Policy Text Block] Entity Public Float Entity Public Float Discount rate Measurement Input, Discount Rate [Member] Statement of Financial Position [Abstract] Statement of Financial Position [Abstract]