Risk Management and Use of Derivative Financial Instruments - Derivative Gain Loss Reclassified From OCI (Details) - Designated as Cash Flow Hedging Instruments - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income	$ (1,258)	$ (557)	$ 1,558
Interest rate swaps | Interest expense
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income	(1,351)	(1,997)	(136)
Foreign currency collars | Other gains and (losses)
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income	292	633	257
Interest rate caps | Interest expense
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income	(199)	(82)	(13)
Foreign currency forward contracts | Other gains and (losses)
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income
Amount of Gain (Loss) on Derivatives Reclassified from Other Comprehensive Income (Loss) into Income	$ 0	$ 889	$ 1,450