Condensed Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement Of Cash Flows [Abstract]
Restricted cash, at the beginning of period	$ 1,662	$ 2,232
Restricted cash, at the end of period	2,165	2,568
Cash paid for interest, capitalized amount	$ 0	$ 96