Debt - Interest Expense (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Debt Instrument [Line Items]
Total interest expense	$ 1,887	$ 2,949	$ 4,023	$ 6,092
Convertible Senior Notes and Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Interest expense	1,084	1,079	2,590	2,367
Amortization of discounts and debt issuance costs	803	1,870	1,433	3,725
Total interest expense	$ 1,887	$ 2,949	$ 4,023	$ 6,092