Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income (loss)	$ 7,890	$ (7,000)	$ 868	$ (11,742)
Other comprehensive income, net of tax
Unrealized gain (loss) on derivatives	26	(63)	46	32
Comprehensive income (loss)	$ 7,916	$ (7,063)	$ 914	$ (11,710)