Derivatives (Narratives) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2019
Interest Rate Derivatives [Abstract]
Total notional amount of Company's variable interest rate swaps on debt	$ 235,000		$ 235,000		$ 22,792
Notional amount of operating lease	1,200		1,200
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	$ 361	$ 57		$ 528
Loss reclassified from AOCI into income (effective portion)			(2)	$ 23
Reclassify net losses on interest rate contracts from AOCI to earnings over the next twelve months			$ 100