Fair Value Measurements (Schedule of Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Mar. 31, 2021
Derivatives Fair Value [Line Items]
Interest rate cap agreements	$ (8,711)	$ (22,725)
Total	(8,711)	(22,725)
Significant Other Observable Inputs (Level 2)
Derivatives Fair Value [Line Items]
Interest rate cap agreements	(8,711)	(22,725)
Total	$ (8,711)	$ (22,725)