Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]
Net income		$ 2,105	$ 8,960	$ 10,919	$ 42,947
Net change in cash flow derivative hedges—net of tax	[1]	404	3,440	2,290	(3,686)
Comprehensive income		$ 2,509	$ 12,400	$ 13,209	$ 39,261

[1] Net of income tax (provision) benefit of $(136) and $1,162 for the three months ended June 30, 2021 and 2020 respectively.  Net of income tax (provision) of $(773) and $(1,255) for the six months ended June 30, 2021 and 2020 respectively.