Debt - Debt Outstanding Excluding Lease Obligations (Detail) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
Principal Balance	$ 382,911	$ 342,853
Unamortized Discount and Debt Issuance Costs	5,852	(7,209)
Net Carrying Amount	377,059	350,062
0.875% Convertible Senior Notes [Member]
Debt Instrument [Line Items]
Principal Balance	207,911	167,853
Unamortized Discount and Debt Issuance Costs	4,331	(9,057)
Net Carrying Amount	203,580	176,910
Senior Secured Credit Facility [Member]
Debt Instrument [Line Items]
Principal Balance	175,000	175,000
Unamortized Discount and Debt Issuance Costs	1,521	1,848
Net Carrying Amount	$ 173,479	$ (173,152)