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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Income Tax Contingency [Line Items] |  |  |  |
Provision (benefit) for income taxes | $ 483 | $ (2,368) | $ (22,795) |
Effective rate | (1.60%) | 0.70% | 6.90% |
Deferred tax liabilities, indefinite-lived intangible assets |  |  | $ 1,900 |
Federal and state research tax credits | $ 1,828 | $ 1,828 |  |
Unrecognized tax benefits that would not impact effective tax rate | 600 |  |  |
Unrecognized tax benefits | $ 609 | $ 678 | $ 753 | $ 934
Tax receivable agreement, percent of cash savings paid to shareholders | 85.00% |  |  |
Tax receivable agreement, percent of cash savings not paid to shareholders | 15.00% |  |  |
Periods Prior to June 2015 |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | $ 79,300 |  |  |
Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Federal and state research tax credits | 2,100 |  |  |
State and Local Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Federal and state research tax credits | 300 |  |  |
Finite-lived Tax Credit Carryforward | Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | 203,700 |  |  |
Finite-lived Tax Credit Carryforward | State and Local Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | 290,800 |  |  |
Indefinite-lived Tax Credit Carryforward | Federal |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | 292,900 |  |  |
Indefinite-lived Tax Credit Carryforward | State and Local Jurisdiction |  |  |  |
Income Tax Contingency [Line Items] |  |  |  |
Net operating loss carryforwards | $ 196,000 |  |  |

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