CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement Of Cash Flows [Abstract]
Cash and cash equivalents	$ 19,232	$ 15,845	$ 21,268
Restricted cash	14,692	14,165	13,580
Cash paid for capitalized interest	$ 7,110	$ 12,586	$ 5,625