Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 9,748	$ 66,922
Other comprehensive loss:
Currency translation adjustment	1,018	(222)
Unrealized loss on derivative instruments	(2,298)	(3,331)
Unrealized loss on derivative instruments at joint venture	(1,121)	(774)
Net loss recognized in other comprehensive income	(2,401)	(4,327)
Tax benefit related to items of other comprehensive loss	532	977
Other comprehensive loss	(1,869)	(3,350)
Total comprehensive income	$ 7,879	$ 63,572