Pension Plans (Schedule of Net Pension Expense) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2016
Compensation and Retirement Disclosure [Abstract]
Service costs	$ 327	$ 1,054	$ 1,054
Interest costs	214	$ 698	698
Amortization of actuarial loss	58		187
Settlements	354		585
Net pension period cost	$ 953		$ 2,524