Employee Benefit Plans (Details 11) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2012
Amounts recognized on the balance sheet
Current liabilities	$ (1,100)	$ (994)
Non-current liabilities	(37,899)	(40,551)
Net liabilities	(38,999)	(41,545)
Amounts recognized in accumulated other comprehensive loss related to defined benefit pension plans
Net prior service cost	(2,149)	(2,307)	(1,918)
Net actuarial loss	(12,319)	(19,850)	(28,172)
Amortization of net transition obligation	(12)	(14)	(24)
Accumulated other comprehensive loss	(14,480)	(22,171)	(30,114)
Deferred tax benefit	192	315	752
Accumulated other comprehensive loss, net of tax	(14,288)	(21,856)	(29,362)
Changes in accumulated other comprehensive loss related to the defined benefit pension plans
Accumulated other comprehensive loss, beginning of year	(21,856)	(29,362)	(18,073)
Transition obligation recognized	4	5
Prior service cost (credit) recognized	210	153	(15)
Actuarial loss recognized	1,056	1,199	275
Curtailment loss	761	2,600
Settlement gain recognized	747	2,276
Gain (loss)	6,087	1,351	(11,808)
Prior service credit		944
Deferred tax benefit (expense)	(123)	(435)	170
Foreign currency exchange rate changes	(1,174)	1,301	89
Accumulated other comprehensive loss, end of year	(14,288)	(21,856)	(29,362)
Accumulated other comprehensive loss which are expected to be recognized as a component of net periodic benefit cost in the next fiscal year
Amortization of net transition obligation	4
Amortization of net prior service costs	212
Amortization of net actuarial loss	368
Total	$ 584