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Income Taxes - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2020
Tax Credit Carryforward [Line Items] |  |  |
Tax benefit associated with making a check-the-box election to treat Aesynt as a U.S. disregarded entity |  | $ 4,200 |
Net tax expense on sale of intellectual property rights | $ 7,400 |  |
Valuation allowance | 1,186 |  | $ 1,199
Unrecognized tax benefits that would impact tax expense | 16,800 |  | 18,200
Uncertain tax positions, interest and penalties | 500 | 500 | 400
Interest and penalties accrued | $ 1,000 | $ 1,400 | 1,400
State and Local Jurisdiction |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Net operating loss |  |  | 6,000
State and Local Jurisdiction | Research Tax Credit Carryforward |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward amount |  |  | 17,000
Foreign Tax Authority |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Net operating loss |  |  | 29,700
Internal Revenue Service (IRS) | Research Tax Credit Carryforward |  |  |
Tax Credit Carryforward [Line Items] |  |  |
Tax credit carryforward amount |  |  | $ 1,300

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