Derivative Instruments - Effect on other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Amount of gain/(loss) recognized in OCI	$ 2,994	$ (26,794)	$ (5,659)
Total amount of Interest Expense presented in the consolidated statements of operations	(51,292)	(54,990)	(61,594)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of operations	0	(9,336)	0
Interest rate swaps
Derivative [Line Items]
Amount of gain/(loss) recognized in OCI	2,994	(26,794)	(5,659)
Amount of gain/(loss) reclassified from OCI	(2,952)	(1,727)	1,836
Total amount of Interest Expense presented in the consolidated statements of operations	(51,292)	(54,990)	(61,594)
Total amount of Loss on Extinguishment of Debt presented in the consolidated statements of operations	$ 0	$ (9,336)	$ 0