Summary of Significant Accounting Policies (Impact of Cash Flow Hedges on Results of Operations, Comprehensive Income and Accumulated Other Comprehensive 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 or (Loss) Recognized as AOCIL on Derivatives, Net of Tax	$ 17,116	$ (47,528)	$ (32,247)
Amount of Gain or (Loss) Recognized from AOCIL into Earnings, Net of Tax	(14,936)	(7,187)	5,900
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized as AOCIL on Derivatives, Net of Tax	17,116	(47,528)	(32,247)
Amount of Gain or (Loss) Recognized from AOCIL into Earnings, Net of Tax	14,936	7,187	(5,900)
Cash Flow Hedging | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized as AOCIL on Derivatives, Net of Tax	17,116	(47,528)	(32,247)
Cash Flow Hedging | Interest Expense [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized from AOCIL into Earnings, Net of Tax	$ 14,936	$ 7,187	$ (5,900)