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Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020 | Oct. 11, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Impairment of intangible assets |  | $ 18,100 | $ 1,600 | $ 20,500 |  |  |  |
Impairment loss on operating lease asset |  |  | 1,400 | 1,500 |  |  |  |
Impairment of equity method investment | $ 0 |  | 0 | 3,500 |  |  |  |
Investments in privately held companies | 14,700 |  | 14,700 |  |  | $ 12,000 |  |
Impairment of property and equipment |  |  | 1,300 | 359 |  |  |  |
Allowance for expected credit losses | 1,220 | 803 | 1,220 | $ 803 | $ 1,107 | 730 | $ 757 |
Fusion Medical, Inc. |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Impairment of equity method investment |  | $ 2,500 |  |  |  |  |  |
Ownership percentage |  | 19.50% |  | 19.50% |  |  |  |
Selio |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Long-term notes receivable | 1,900 |  | 1,900 |  |  | 2,200 |  |
Allowance for expected credit losses | 1,200 |  | 1,200 |  |  | 700 |  |
Ownership percentage |  |  |  |  |  |  |  | 19.50%
Director | Cianna Medical |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Contingent payments related to acquisition |  |  | 0 | $ 800 |  |  |  |
Other long-term obligations |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Contingent consideration liability, noncurrent | 13,200 |  | 13,200 |  |  | 36,900 |  |
Accrued expenses |  |  |  |  |  |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |  |  |  |  |  |
Contingent consideration liability, current | $ 35,300 |  | $ 35,300 |  |  | $ 18,800 |  |

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