Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Condensed Consolidated Statements of Cash Flows
Net loss	$ (48,237)	$ (42,674)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	25,780	23,177
Equity loss from NEC TOKIN	4,620
Amortization of debt discount and debt issuance costs	1,959	1,924
Stock-based compensation expense	1,628	2,506
Long-term receivable write down	1,444
Change in value of NEC TOKIN options	383
Net loss on sales and disposals of assets	42	73
Pension and other post-retirement benefits	27	205
Write down of long-lived assets		4,234
Settlement gain on benefit plans		(1,675)
Goodwill impairment		1,092
Change in deferred income taxes	(957)	838
Change in operating assets	(6,156)	(18,656)
Change in operating liabilities	(12,107)	2,154
Other	(32)	178
Net cash used in operating activities	(31,606)	(26,624)
Investing activities:
Capital expenditures	(18,337)	(30,343)
Change in restricted cash	2,874
Net cash used in investing activities	(15,463)	(30,343)
Financing activities:
Proceeds from revolving line of credit	21,000
Proceeds from issuance of debt		15,825
Deferred acquisition payments	(11,452)	(6,617)
Payments of long-term debt	(1,422)	(1,576)
Proceeds from exercise of stock options	57	42
Debt issuance costs		(275)
Net cash provided by financing activities	8,183	7,399
Net decrease in cash and cash equivalents	(38,886)	(49,568)
Effect of foreign currency fluctuations on cash	608	(458)
Cash and cash equivalents at beginning of fiscal period	95,978	210,521
Cash and cash equivalents at end of fiscal period	$ 57,700	$ 160,495