Investments - Schedule of Equity Investments with and without Readily Determinable Fair Values Assessed (Detail) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Equity Securities Without Readily Determinable Fair Value [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount	$ 9,173	$ 6,725
Reneo [Member] | Common Stock [Member]
Equity Securities Without Readily Determinable Fair Value [Line Items]
Equity Investments with Readily Determinable Fair Value, Amount	4,928
Equity Securities without Readily Determinable Fair Value, Amount		2,480
Anteris Bio, Inc. [Member] | Preferred Stock [Member]
Equity Securities Without Readily Determinable Fair Value [Line Items]
Equity Securities without Readily Determinable Fair Value, Amount	$ 4,245	$ 4,245