Risk Management and Derivatives (Derivative Instrument Gain (Loss)) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income	$ 13,290	$ (20,018)	$ (32,518)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings	(3,191)	(1,680)	(271)
Designated as Hedging Instrument | Interest Expense | Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income	13,290	(20,018)	(32,518)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income into Earnings	$ (3,191)	$ (1,680)	(271)
Not Designated as Hedging Instrument | Interest Expense | Interest rate cap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income			$ (4)