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Organization and Summary of Significant Accounting Policies - Narrative (Details) - USD ($) | 6 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Jun. 30, 2020
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Restricted cash | $ 0 | $ 9,500,000 | $ 1,400,000 | $ 0
Restricted cash, current |  | 2,000,000 | 1,000,000 |
Restricted cash, non current |  | $ 7,500,000 | 400,000 |
Lease extension term |  | 10 years |  |
Unamortized software costs |  | $ 7,100,000 | 6,700,000 |
Amortization expense for capitalized software |  | 1,200,000 | 200,000 |
Advance Medicare payments to provide relief from economic impacts of COVID-19 |  |  |  | 29,700,000
Revenue increase (decrease) due to changes in estimated transaction price due to contractual adjustments |  | 22,100,000 | 15,900,000 | (9,900,000)
Revenue recognized due to expanded local coverage determination for which revenue was previously constrained |  |  | 6,800,000 |
Accrued liability for Medicare refund |  | 23,600,000 | 19,300,000 |
Reduced revenues | (299,800,000) | (678,400,000) | (690,600,000) | (638,600,000)
Capitalized costs incurred to obtain or fulfill contract |  | 0 |  |
Net gain on divestiture | $ 0 | $ 0 | $ 162,000,000.0 | 1,000,000.0
Provider fund relief under CARES Act |  |  |  | $ 14,600,000
Minimum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Remaining lease terms |  | 1 year |  |
Maximum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Remaining lease terms |  | 15 years |  |
Immaterial Prior Period Medicare Claims |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Change in earnings (loss) per share (in dollars per share) |  |  |  | $ (0.05)
Accrued liability for Medicare refund |  |  |  | $ 4,700,000
Reduced revenues |  |  |  | $ 4,700,000
Performance Obligation Estimate |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Change in earnings (loss) per share (in dollars per share) |  | $ 0.21 | $ 0.15 | $ (0.10)
Equipment | Minimum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Estimated useful lives (in years) |  | 5 years |  |
Equipment | Maximum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Estimated useful lives (in years) |  | 7 years |  |
Leasehold improvements | Minimum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Estimated useful lives (in years) |  | 1 year |  |
Leasehold improvements | Maximum |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Estimated useful lives (in years) |  | 15 years |  |
Government Contracts Concentration Risk | Medicare | Revenue |  |  |  |
Organization Consolidation And Presentation Of Financial Statements Disclosure [Line Items] |  |  |  |
Concentration risk (in percent) | 16.00% | 14.00% | 17.00% | 15.00%

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