Other Comprehensive Income (Loss) Pretax Amounts by Component, Reclassified from Accumulated Other Comprehensive Loss to Earnings (Details) - Reclassification out of Accumulated Other Comprehensive Income [Member] - Pensions, Net of Tax [Member] - USD ($) $ in Thousands		3 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
Reclassification Out Of Accumulated Other Comprehensive Income [Line Items]
Actuarial loss	[1]	$ 961	$ 669
Amortization of prior service cost	[1]	39	(255)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Adjustment, before Tax	[1]	1,000	414
Amounts reclassified from accumulated other comprehensive losses to net earnings		$ 1,000	$ 414

[1] Amounts are included in net periodic benefit costs for pension and postretirement plans. See Note 13 "Pension and Postretirement Benefits" to the "Notes to Condensed Consolidated Financial Statements" for further information.