Supplemental Balance Sheets and Statements of Operations - Other Expenses and Obligations (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Accrued expenses:
Salaries, wages, and related employee costs	$ 20,708	$ 26,117
Interest	15,683	15,678
Restructuring	946	6,591
Accrued Vacation, Current	7,892	6,286
Other	5,091	5,784
Total accrued expenses	50,320	60,456
Other non-current obligations:
Pension plans	35,156	38,982
Employee separation liability	9,352	10,638
Deferred Compensation Liability, Classified, Noncurrent	1,544	1,548
Purchase Obligation	0	1,594
Restructuring	30	648
Option Valuation Noncurrent	20,600
Long-Term Service Contracts Noncurrent	2,343
Other	5,867	3,721
Total other non-current obligations	74,892	57,131
Non-operating (income) expense, net:
Net foreign exchange (gains) losses	(3,036)	(4,249)	$ (304)
Gain on early extinguishment of debt	0	(1,003)	0
Offering memorandum fees	0	1,142	0
Other	(688)	(28)	(734)
Nonoperating Income (Expense)	$ 2,348	$ 4,082	$ (430)