Fair Value Measurements - Fair Value Measurements, Recurring and Nonrecurring (Detail) - Financial Instruments [Member] - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	$ 177,682	$ 230,420
Investments	74,169	94,902
Contingent Consideration Payable	(41,943)	(83,865)
Warrant Liability	(4,520)	(24,877)
Fair Value, Net Asset (Liability)	205,388	216,580
Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	177,682	230,420
Investments	24,749	44,117
Contingent Consideration Payable	0	0
Warrant Liability	0	0
Fair Value, Net Asset (Liability)	202,431	274,537
Fair Value, Inputs, Level 2 [member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	0	0
Investments	0	0
Contingent Consideration Payable	0	0
Warrant Liability	0	0
Fair Value, Net Asset (Liability)	0	0
Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	0	0
Investments	49,420	50,785
Contingent Consideration Payable	(41,943)	(83,865)
Warrant Liability	(4,520)	(24,877)
Fair Value, Net Asset (Liability)	$ 2,957	$ (57,957)