Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Net Cash Provided by (Used in) Operating Activities [Abstract]
Income (loss) from discontinued operations, net of income tax expense (benefit) of $918 and $(236), respectively	$ 6,943	$ (1,510)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	6,943	(1,510)
Net loss	(3,540)	(35,140)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax	(7,374)
Net cash provided by (used in) operating activities of discontinued operations	(905)	(2,845)
Depreciation and amortization	10,797	13,639
Equity loss from NEC TOKIN	1,675	3,377
Amortization of debt discount and debt issuance costs	665	1,014
Stock-based compensation expense	994	969
Long-term receivable write down	59	1,444
Change in value of NEC TOKIN options	(4,100)	0
Net loss on sales and disposals of assets	365	0
Pension and other post-retirement benefits	8	(42)
Change in deferred income taxes	156	(241)
Change in operating assets	(6,887)	(12,108)
Change in operating liabilities	(2,974)	2,613
Other	(1,084)	(311)
Net cash used in operating activities	(12,145)	(27,631)
Investing activities:
Capital expenditures	(5,182)	(15,481)
Proceeds from Sale of Property, Plant, and Equipment	2,446
Change in restricted cash	302	1,591
Proceeds from Divestiture of Businesses, Net of Cash Divested	10,125
Net cash provided by (used in) investing activities	7,691	(13,890)
Financing activities:
Proceeds from revolving line of credit	7,500	0
Deferred acquisition payments	(296)	(1,204)
Payments of long-term debt	(2,205)	(306)
Proceeds from exercise of stock options	11	19
Net cash provided by (used in) financing activities	5,010	(1,491)
Net increase (decrease) in cash and cash equivalents	556	(43,012)
Effect of foreign currency fluctuations on cash	(63)	189
Cash and cash equivalents at beginning of fiscal period	57,929	95,978
Cash and cash equivalents at end of fiscal period	$ 58,422	$ 53,155