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Business Combinations - Schedule of Pro-Forma Information, PRA Acquisition (Details) - PRA Health Sciences, Inc - USD ($) $ in Thousands | 12 Months Ended | 18 Months Ended
--- | --- | ---
Dec. 31, 2022 | Dec. 31, 2022
Business Acquisition [Line Items] |  |
Cash and cash equivalents |  | $ 0
Accounts receivable and unbilled revenue |  | 0
Other current assets |  | 14,465
Fixed assets |  | (6,137)
Operating lease right-of-use assets |  | (11,744)
Goodwill |  | 70,436
Intangible assets |  | 44,000
Deferred tax assets |  | (147,039)
Other assets |  | (1,166)
Accounts payable |  | 0
Accrued expenses and other current liabilities |  | (37,496)
Current portion of operating lease liabilities |  | 1,865
Unearned revenue |  | 19,623
Non-current portion of operating lease liabilities |  | 10,454
Non-current deferred tax liabilities |  | 193,837
Other non-current liabilities |  | $ (151,098)
Amortization adjustment | $ 2,200 |
Accounting Standards Update 2021-08 |  |
Business Acquisition [Line Items] |  |
Unearned revenue | $ 16,000 |

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