Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ (37,050)	$ (3,540)
Net income (loss)	(37,050)	(3,540)
Other comprehensive income (loss):
Amounts reclassified out of AOCI	127	8
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(2,113)	601
Other comprehensive income (loss) before reclassifications	1,986	(609)
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Adjustment, Net of Tax	2,113	(601)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest	(34,937)	(4,141)
Foreign currency translation gains (losses)
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(5,865)	1,100
Other comprehensive income (loss) before reclassifications	5,865	(1,100)
Post-retirement plan adjustments
Other comprehensive income (loss):
Amounts reclassified out of AOCI	(40)	(52)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	40	52
Forward Contracts [Member]
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	2,947	0
Other comprehensive income (loss) before reclassifications	(2,947)
Equity interest in NEC TOKIN's other comprehensive income (loss)
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	932	(491)
Other comprehensive income (loss) before reclassifications	$ (932)	$ 491