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Fair Value Measurements - Contingent Consideration Reconciliation (Details) - Fair Value, Recurring - Level 3 $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($)
Liabilities Measured on Recurring Basis
Total at beginning period	$ 103,818
Total at period end	99,271
Embedded Exchange Feature Derivative Liability
Liabilities Measured on Recurring Basis
Total at beginning period	121,756
Payments	0
Changes in fair value	26,335
Total at period end	148,091
Less current portion at period end	0
Long-term portion at period end	148,091
Other Derivative Liabilities
Liabilities Measured on Recurring Basis
Total at beginning period	4,290
Payments	0
Changes in fair value	(3,167)
Total at period end	1,123
Less current portion at period end	931
Long-term portion at period end	192
Contingent Consideration Liability Arrangements
Liabilities Measured on Recurring Basis
Total at beginning period	103,818
Payments	(5,000)
Changes in fair value	453
Total at period end	99,271
Less current portion at period end	9,424
Long-term portion at period end	89,847
Derivative Financial Instruments, Assets
Assets Measured on Recurring Basis
As of beginning period	72,302
Payments	0
Changes in fair value	12,550
Total at period end	84,852
Less current portion at period end	0
Long-term portion at period end	84,852
Notes Receivable
Assets Measured on Recurring Basis
As of beginning period	2,775
Payments	0
Changes in fair value	(17)
Total at period end	2,758
Less current portion at period end	2,495
Long-term portion at period end	$ 263

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- Definition

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Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3).

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