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Fair Value Measurements - Fair Value of Contingent Consideration by Acquisition (Details) - USD ($) $ in Thousands | Sep. 30, 2020 | Dec. 31, 2019
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Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | $ 79,603 | $ 114,396
Fair Value, Recurring |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 96,174 | 137,349
Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 96,174 | 137,349
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value | 96,174 | 137,349
ImThera | Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 79,603 | 113,503
TandemLife | Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 11,672 | 17,311
Miami Instruments | Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 4,899 | 5,338
Drilltex | Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | 0 | 294
Other | Fair Value, Recurring | Level 3 |  |
Business Acquisition, Contingent Consideration [Line Items] |  |
Contingent consideration | $ 0 | $ 903

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