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Interest Rate Cap Agreements (Schedule of Effect of Derivative Instruments on Statement of Operations) (Details) - Cash Flow Hedging [Member] - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2021
Mar. 31, 2020
Mar. 31, 2019
Derivative Instruments, Gain (Loss) [Line Items]      
Gain/(loss) related to derivative financial instruments recognized in other comprehensive income (loss) $ (4,855) $ (1,361)
Gain/ (loss) related to portion of derivative financial instruments reclassified from accumulated other comprehensive income (loss) to interest expense $ 1,202 $ (22)