Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net income (loss)	$ 6,330	$ (13,096)	$ 2,790	$ (48,236)
Other comprehensive income (loss):
Amounts reclassified out of AOCI	29	60	37	165
Other comprehensive income (loss) before reclassifications	(10,677)	5,835	(11,286)	7,456
Other comprehensive income (loss)	(10,648)	5,895	(11,249)	7,621
Total comprehensive income (loss)	(4,318)	(7,201)	(8,459)	(40,615)
Foreign currency translation gains (losses)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassifications	(13,659)	6,359	(14,759)	8,631
Other comprehensive income (loss)	(13,659)	6,359	(14,759)	8,631
Defined benefit pension plans, net of tax impact
Other comprehensive income (loss):
Amounts reclassified out of AOCI	81	121	141	296
Other comprehensive income (loss)	81	121	141	296
Post-retirement plan adjustments
Other comprehensive income (loss):
Amounts reclassified out of AOCI	(52)	(61)	(104)	(131)
Other comprehensive income (loss)	(52)	(61)	(104)	(131)
Equity interest in NEC TOKIN's other comprehensive income (loss)
Other comprehensive income (loss):
Other comprehensive income (loss) before reclassifications	2,982	(524)	3,473	(1,175)
Other comprehensive income (loss)	$ 2,982	$ (524)	$ 3,473	$ (1,175)