Condensed Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements of Cash Flows
Net loss	$ (35,139)	$ (17,753)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	13,731	11,656
Amortization of debt discount and debt issuance costs	1,014	971
Equity loss from NEC TOKIN	3,377
Net loss on sales and disposals of assets		104
Stock-based compensation expense	968	1,264
Long-term receivable write down	1,444
Change in deferred income taxes	(241)	122
Change in operating assets	(14,385)	(12,029)
Change in operating liabilities	1,706	(5,490)
Other	(106)	(52)
Net cash used in operating activities	(27,631)	(21,207)
Investing activities:
Capital expenditures	(15,481)	(13,101)
Change in restricted cash	1,591
Net cash used in investing activities	(13,890)	(13,101)
Financing activities:
Proceeds from issuance of debt		15,825
Deferred acquisition payments	(1,204)	(1,439)
Payments of long-term debt	(306)	(1,576)
Proceeds from exercise of stock options	19	41
Debt issuance costs		(275)
Net cash provided by (used in) financing activities	(1,491)	12,576
Net decrease in cash and cash equivalents	(43,012)	(21,732)
Effect of foreign currency fluctuations on cash	189	(943)
Cash and cash equivalents at beginning of fiscal period	95,978	210,521
Cash and cash equivalents at end of fiscal period	$ 53,155	$ 187,846