Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest Expense
Interest expense before capitalized interest	$ 18,442	$ 16,666
Amortization of deferred financing costs	1,130	1,047
Interest expense related to finance lease right-of-use assets	1,844	426
Net unrealized gain on derivative financial instruments not designated as accounting hedges	(3,367)	(133)
Capitalized interest	(1,771)	(1,710)
Interest expense	$ 16,278	$ 16,296