Summary of Significant Accounting Policies - Summary of Impact of Accounting Standards Adoption (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Property Plant And Equipment [Line Items]
Convertible debt	$ 194,976	$ 194,649	$ 153,882
Additional paid-in capital	339,610	332,555	363,055
Retained earnings	39,623	37,813	37,580
Deferred tax liabilities	13,321	$ 13,348	$ 23,848
ASU 2020-06
Property Plant And Equipment [Line Items]
Convertible debt	40,767
Additional paid-in capital	(30,500)
Retained earnings	233
Deferred tax liabilities	$ (10,500)
Accounting Standards Update [Extensible List]	ASU 2020-06