Derivatives (Effect of interest rate contracts on statement of operations) (Details) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Effect of Interest rate Contracts [Abstract]
Loss recognized in income on interest rate contracts	$ (404)	$ 824	$ 3,893
(Gain) recognized in AOCI on interest rate contracts (effective portion)	(8,356)	633	4,445
Loss reclassified from AOCI into income (effective portion)	$ (401)	$ 789	$ 3,893

No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

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- Definition

Amount of decrease in the fair value of derivatives recognized in the income statement.

+ References

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- Definition

Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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