Derivatives (Effect of Interest Rate Contracts on the Statement of Operations) (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
The effect of interest rate contracts on the statement of operations:
Loss recognized in income on interest rate contracts	$ 156	$ 1,075	$ 672	$ 2,624
Gain recognized in AOCI on interest rate contracts (effective portion)			(846)	(2,744)
Loss reclassified from AOCI into income (effective portion)			645	2,618
(Gain) loss recognized in income on interest rate contracts (ineffective portion and amount excluded from effectiveness testing)			$ 27	$ 6

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

The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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- Definition

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

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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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