Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of other assets			$ 359
Impairment loss			1,500
Investments in privately held companies	$ 12,000		12,000			$ 17,100
Impairment of intangible assets	18,100	$ 2,700	20,500	$ 3,300
Impairment charges	20,585	2,702	28,305	3,250
Long-term notes receivable	2,900		2,900			2,700
Allowance for expected credit losses	803		803		$ 757
Bluegrass Vascular Technologies, Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment charges			3,500
Fusion Medical, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of equity method investment	2,500
Contingent Receivable | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gain (loss) on contingent receivable		$ (119)		(101)
Director | Cianna Medical
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent payments related to acquisition			800	$ 1,000
Other long-term obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, noncurrent	50,100		50,100			48,100
Accrued expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, current	$ 14,500		$ 14,500			$ 28,600