Accumulated Other Comprehensive Income (Amounts Reclassified from AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Accumulated Other Comprehensive Income [Line Items]
Total	$ 10,067	$ (3,993)	$ 31,090	$ (3,592)
Interest Rate Swap | Reclassification out of Accumulated Other Comprehensive Income | Derivative Instruments
Accumulated Other Comprehensive Income [Line Items]
Interest Expense - Amortization of Derivative Instruments	103	103	205	205
Interest Expense - Settlement Payments	1,552	1,706	3,249	2,088
Total	$ 1,655	$ 1,809	$ 3,454	$ 2,293