Fair Value Measurements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment loss on operating lease asset		$ 1,500
Investments in privately held companies	$ 17,129	12,043	$ 17,129
Impairment of intangible assets		28,700	3,300	$ 657
Impairment charges		36,504	23,750	$ 657
Long-term notes receivable	2,722	2,196	2,722
Allowance for expected credit losses		730
NinePoint Medical, Inc.
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of property and equipment		359
Impairment charges	20,500		20,500
Write off of accrued interest	(1,600)		(1,600)
Bluegrass Vascular Technologies, Inc
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impairment of equity method investment		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
Ownership percentage		19.50%
Contingent Receivable | Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Payment received on contingent receivable			535
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	48,100	36,900	48,100
Accrued expenses
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, current	$ 28,600	$ 18,800	$ 28,600