Kemet (KEM) 10-Q 31 Oct 14 2014 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Sep. 30, 2014	Oct. 29, 2014
Document and Entity Information	'	'
Entity Registrant Name	'KEMET CORP	'
Entity Central Index Key	'0000887730	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Current Fiscal Year End Date	'--03-31	'
Entity Current Reporting Status	'Yes	'
Entity Filer Category	'Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	45,404,915
Document Fiscal Year Focus	'2014	'
Document Fiscal Period Focus (Q1,Q2,Q3,FY)	'Q2	'

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Thousands, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$51,576	$57,929
Accounts receivable, net	95,581	98,947
Inventories, net	188,833	187,974
Prepaid expenses and other	40,229	36,871
Deferred income taxes	6,569	6,695
Current assets of discontinued operations	0	12,160
Total current assets	382,788	400,576
Property, plant and equipment, net of accumulated depreciation of $811,576 and $805,687 as of September 30, 2014 and March 31, 2014, respectively	275,498	292,648
Goodwill	35,584	35,584
Intangible assets, net	35,377	37,184
Investment in NEC TOKIN	48,449	46,419
Restricted cash	12,955	13,512
Deferred income taxes	6,423	6,778
Other assets	20,153	10,130
Non-current assets of discontinued operations	0	836
Total assets	817,227	843,667
Current liabilities:	'	'
Current portion of long-term debt	25,826	7,297
Accounts payable	72,629	74,818
Accrued expenses	66,400	76,468
Income taxes payable and deferred income taxes	345	980
Current liabilities of discontinued operations	0	7,269
Total current liabilities	165,200	166,832
Long-term debt, less current portion	376,256	391,292
Other non-current obligations	52,246	55,864
Deferred income taxes	8,687	5,203
Non-current liabilities of discontinued operations	0	2,592
Stockholders’ equity:	'	'
Preferred stock, par value $0.01, authorized 10,000 shares, none issued	0	0
Common stock, par value $0.01, authorized 175,000 shares, issued 46,508 shares at September 30, 2014 and March 31, 2014	465	465
Additional paid-in capital	461,478	465,027
Retained deficit	-228,948	-231,738
Accumulated other comprehensive income	6,935	18,184
Treasury stock, at cost (1,103 and 1,301 shares at September 30, 2014 and March 31, 2014, respectively)	-25,092	-30,054
Total stockholders’ equity	214,838	221,884
Total liabilities and stockholders’ equity	$817,227	$843,667

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Thousands, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Property and equipment, accumulated depreciation	$811,576	$805,687
Preferred stock, par value (in dollars per share)	$0.01	$0.01
Preferred stock, authorized shares	10,000,000	10,000,000
Preferred stock, issued shares	0	0
Common stock, par value (in dollars per share)	$0.01	$0.01
Common stock, authorized shares	175,000,000	175,000,000
Common stock, issued shares	46,508,000	46,508,000
Treasury stock, shares	1,384,000	1,519,000

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Net sales	$215,293	$208,449	$428,174	$410,506
Operating costs and expenses:	'	'	'	'
Cost of sales	169,538	177,532	349,462	361,045
Selling, general and administrative expenses	25,510	22,315	50,289	48,395
Research and development	6,338	5,611	12,927	11,677
Restructuring charges	1,687	1,364	3,517	5,974
Net (gain) loss on sales and disposals of assets	-550	42	-185	42
Total operating costs and expenses	202,523	206,864	416,010	427,133
Operating income (loss)	12,770	1,585	12,164	-16,627
Non-operating (income) expense:	'	'	'	'
Interest income	3	11	6	175
Interest expense	10,287	9,908	20,743	19,942
Other (income) expense, net	-7,595	946	-11,128	1,301
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	10,081	-9,258	2,555	-37,695
Income tax expense	2,583	1,444	3,865	3,260
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	7,498	-10,702	-1,310	-40,955
Equity income (loss) from NEC TOKIN	232	-1,243	-1,443	-4,620
Income (loss) from continuing operations	7,730	-11,945	-2,753	-45,575
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	-1,400	-1,151	5,543	-2,661
Net income (loss)	$6,330	($13,096)	$2,790	($48,236)
Net income (loss) per basic share:	'	'	'	'
Net income (loss) from continuing operations	$0.17	($0.26)	($0.06)	($1.01)
Net income (loss) from discontinued operations	($0.03)	($0.03)	$0.12	($0.06)
Net income (loss)	$0.14	($0.29)	$0.06	($1.07)
Net income (loss) per diluted share:	'	'	'	'
Net income (loss) from continuing operations	$0.15	($0.26)	($0.05)	($1.01)
Net income (loss) from discontinued operations	($0.03)	($0.03)	$0.11	($0.06)
Net income (loss)	$0.12	($0.29)	$0.06	($1.07)
Weighted-average shares outstanding:	'	'	'	'
Basic	45,400	45,092	45,337	45,057
Diluted	52,521	45,092	52,562	45,057

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Operations Condensed Consolidated Statements of Operations (Parenthetical) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]	'	'	'	'
Income tax expense (benefit) from discontinued operations	$1,017	($124)	$1,935	($360)

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Comprehensive Income (Loss) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	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)

Condensed_Consolidated_Stateme3

Condensed Consolidated Statements of Cash Flows (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Net Cash Provided by (Used in) Operating Activities [Abstract]	'	'
Net income (loss)	$2,790	($48,236)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:	'	'
Gain on sale of discontinued operations	-5,809	0
Net cash provided by (used in) operating activities of discontinued operations	-1,357	933
Depreciation and amortization	20,974	25,590
Equity (income) loss from NEC TOKIN	1,443	4,620
Amortization of debt and financing costs	1,332	1,959
Stock-based compensation expense	1,952	1,628
Long-term receivable write down	59	1,444
Change in value of NEC TOKIN options	-10,700	382
Net (gain) loss on sales and disposals of assets	-185	42
Pension and other post-retirement benefits	37	27
Change in deferred income taxes	2,142	-957
Change in operating assets	-4,268	-8,261
Change in operating liabilities	-6,341	-10,932
Other	-475	155
Net cash provided by (used in) operating activities	1,594	-31,606
Investing activities:	'	'
Capital expenditures	-11,975	-18,337
Proceeds from sale of assets	2,451	0
Change in restricted cash	558	2,874
Proceeds from sale of discontinued operations	10,125	0
Net cash provided by (used in) investing activities	1,159	-15,463
Financing activities:	'	'
Proceeds from revolving line of credit	14,300	21,000
Payments of revolving line credit	-7,500	0
Deferred acquisition payments	-11,597	-11,452
Payments of long-term debt	-3,135	-1,422
Proceeds from exercise of stock options	25	57
Net cash provided by (used in) financing activities	-7,907	8,183
Net increase (decrease) in cash and cash equivalents	-5,154	-38,886
Effect of foreign currency fluctuations on cash	-1,199	608
Cash and cash equivalents at beginning of fiscal period	57,929	95,978
Cash and cash equivalents at end of fiscal period	$51,576	$57,700

Basis_of_Financial_Statement_P

Basis of Financial Statement Presentation	6 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Basis of Financial Statement Presentation	'
	Basis of Financial Statement Presentation
	The condensed consolidated financial statements contained herein are unaudited and have been prepared from the books and records of KEMET Corporation and its subsidiaries (“KEMET” or the “Company”). In the opinion of management, the condensed consolidated financial statements reflect all adjustments, consisting only of normal recurring adjustments, necessary for a fair presentation of the results for the interim periods. The condensed consolidated financial statements have been prepared in accordance with the instructions to Form 10-Q, and therefore, do not include all information and footnotes necessary for a complete presentation of financial position, results of operations, and cash flows in conformity with U.S. generally accepted accounting principles (“U.S. GAAP”). Although the Company believes the disclosures are adequate to make the information presented not misleading, it is suggested that these condensed consolidated financial statements be read in conjunction with the audited financial statements and notes thereto included in the Company’s Form 10-K for the fiscal year ended March 31, 2014 (the “Company’s 2014 Annual Report”).
	The accompanying condensed consolidated financial statements include the accounts of the Company and its wholly-owned subsidiaries. In consolidation, all significant intercompany amounts and transactions have been eliminated.  Certain prior year amounts have been reclassified to conform to current year presentation.  Net sales and operating results for the quarter and six month periods ended September 30, 2014 are not necessarily indicative of the results to be expected for the full year.
	The Company’s significant accounting policies are presented in the Company’s 2014 Annual Report.
	Use of Estimates and Assumptions
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and judgments based on historical data and other assumptions that management believes are reasonable.  These estimates and assumptions affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. In addition, they affect the reported amounts of revenues and expenses during the reporting period.
	The Company’s judgments are based on management’s assessment as to the effect certain estimates, assumptions, or future trends or events may have on the financial condition and results of operations reported in the unaudited condensed consolidated financial statements. It is important that readers of these unaudited financial statements understand that actual results could differ from these estimates, assumptions, and judgments.
	Recently Issued Accounting Pronouncements
	New accounting standards adopted
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers, which supersedes existing accounting standards for revenue recognition and creates a single framework. The new guidance is effective for the Company's fiscal year that begins on April 1, 2017 and interim periods within that fiscal year and requires either a retrospective or a modified retrospective approach to adoption. The Company is currently evaluating the potential impact on its Consolidated Financial Statements and related disclosures, as well as the available transition methods. Early adoption is prohibited.
	There are currently no other accounting standards that have been issued that will have a significant impact on the Company’s financial position, results of operations or cash flows upon adoption.
	Restricted Cash
	As discussed in Note 3, Debt, the Company received a $24.0 million prepayment from an original equipment manufacturer (“OEM”) and, through September 30, 2014, utilized $13.1 million for the purchase of manufacturing equipment. The remaining proceeds of $10.9 million are classified as restricted cash at September 30, 2014.
	A bank guarantee in the amount of €1.5 million ($1.9 million) was issued by a European bank on behalf of the Company in August 2006 in conjunction with the establishment of a Value-Added Tax (“VAT”) registration in The Netherlands. Accordingly, a deposit was placed with the European bank for €1.7 million ($2.1 million). While the deposit is in KEMET’s name, and KEMET receives all interest earned by this deposit, the deposit is pledged to the European bank, and the bank can use the funds if a valid claim against the bank guarantee is made. The bank guarantee will remain valid until it is discharged by the beneficiary.
	Fair Value Measurement
	The Company utilizes three levels of inputs to measure the fair value of (a) nonfinancial assets and liabilities that are recognized or disclosed at fair value in the Company’s consolidated financial statements on a recurring basis (at least annually) and (b) all financial assets and liabilities. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs.
	The first two inputs are considered observable and the last is considered unobservable. The levels of inputs are as follows:
	•	Level 1—Quoted prices in active markets for identical assets or liabilities.
	•	Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	•	Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and March 31, 2014 are as follows (amounts in thousands):
		Carrying Value September 30,			Fair Value September 30,			Fair Value Measurement Using						Carrying Value March 31,		Fair Value March 31,		Fair Value Measurement Using
		2014			2014			Level 1		Level 2 (2)		Level 3		2014		2014		Level 1		Level 2 (2)		Level 3
	Assets:
	Money markets (1)	$	739		$	739		$	739	$	—	$	—	$	714	$	714	$	714	$	—	$	—
	Total debt	402,082			414,406			372,750		41,656		—		398,589		409,284		371,863		37,421		—
	NEC TOKIN options,	14,300			14,300			—		—		14,300		3,600		3,600		—		—		3,600
	net (3)
	___________________
	-1	Included in the line item “Cash and cash equivalents” on the Condensed Consolidated Balance Sheets.
	-2	The valuation approach used to calculate fair value was a discounted cash flow based on the borrowing rate for each respective debt facility.
	-3	See Note 6, Investment in NEC TOKIN, for a description of the NEC TOKIN options.  The value of the options is interrelated and depends
	on the enterprise value of NEC TOKIN Corporation and its forecasted EBITDA over the duration of the instruments. The options have been valued using option pricing methods in a Monte Carlo simulation.
	The table below summarizes NEC TOKIN option valuation activity using significant unobservable inputs (Level 3) (amounts in thousands):
	31-Mar-14	$	3,600
	Change in value of NEC TOKIN options	10,700
	30-Sep-14	$	14,300
	Inventories
	Inventories are stated at the lower of cost or market.  The components of inventories are as follows (amounts in thousands):
		30-Sep-14			31-Mar-14
	Raw materials and supplies	$	89,416		$	90,968
	Work in process	58,363			61,310
	Finished goods	62,358			62,522
		210,137			214,800
	Inventory reserves (1)	(21,304		)	(26,826		)
		$	188,833		$	187,974
	___________________
	-1	During the quarter ended June 30, 2013, the Company recorded a $3.9 million reserve for inventory held by a third party. In the quarter ended June 30, 2014, this $3.9 million of inventory and the related reserve was written off.
	Warrant
	As of September 30, 2014 and March 31, 2014, 8.4 million shares were subject to the warrant held by K Equity, LLC.
	Revenue Recognition
	The Company ships products to customers based upon firm orders and revenue is recognized when the sales process is complete. This occurs when products are shipped to the customer in accordance with the terms of an agreement of sale, there is a fixed or determinable selling price, title and risk of loss have been transferred and collectability is reasonably assured. Shipping and handling costs are included in cost of sales.
	A portion of sales is related to products designed to meet customer specific requirements. These products typically have stricter tolerances making them useful to the specific customer requesting the product and to customers with similar or less stringent requirements. The Company recognizes revenue when title to the products transfers to the customer.
	A portion of sales is made to distributors under agreements allowing certain rights of return and price protection on unsold merchandise held by distributors. The Company's distributor policy includes inventory price protection and "ship-from-stock and debit" ("SFSD") programs common in the industry.
	KEMET's SFSD program provides authorized distributors with the flexibility to meet marketplace prices by allowing them, upon a pre-approved case-by-case basis, to adjust their purchased inventory cost to correspond with current market demand. Requests for SFSD adjustments are considered on an individual basis, require a pre-approved cost adjustment quote from their local KEMET sales representative and apply only to a specific customer, part, specified special price amount, specified quantity, and is only valid for a specific period of time. To estimate potential SFSD adjustments corresponding with current period sales, KEMET records a sales reserve based on historical SFSD credits, distributor inventory levels, and certain accounting assumptions, all of which are reviewed quarterly.
	Most of the Company's distributors have the right to return to KEMET a certain portion of the purchased inventory, which, in general, does not exceed 6% of their purchases from the previous fiscal quarter. KEMET estimates future returns based on historical return patterns and records a corresponding allowance on the Condensed Consolidated Balance Sheets. The Company also offers volume based rebates on a case -by-case basis to certain customers in each of the Company's sales' channels.
	The establishment of sales allowances is recognized as a component of the line item "Net sales" on the Condensed Consolidated Statements of Operations, while the associated reserves are included in the line item "Accounts receivable, net" on the Condensed Consolidated Balance Sheets. Estimates used in determining sales allowances are subject to various factors. This includes, but is not limited to, changes in economic conditions, pricing changes, product demand, inventory levels in the supply chain, the effects of technological change, and other variables that might result in changes to the Company's estimates.
	The Company provides a limited warranty to customers that the Company’s products meet certain specifications. The warranty period is generally limited to one year, and the Company’s liability under the warranty is generally limited to a replacement of the product or refund of the purchase price of the product. Warranty costs as a percentage of net sales were approximately 1.0% for the quarters and six month periods ended September 30, 2014 and 2013. The Company recognizes warranty costs when they are both probable and reasonably estimable.

Discontinued_Operations

Discontinued Operations	6 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Discontinued Operations	'
	Discontinued Operations
	The Film and Electrolytic business group completed the sale of its machinery division in April, 2014, which, subject to closing adjustments, resulted in a gain of $5.8 million on the sale of the business (after income tax expense) offset by a loss from machinery operations of $0.3 million during the six month period ended September 30, 2014 resulting in net income from discontinued operations of $5.5 million.
	Net sales and operating income (loss) from the Company’s discontinued operation for the quarters and six month periods ended September 30, 2014 and 2013 were (amounts in thousands):
		Quarters Ended September 30,					Six Month Periods Ended September 30,
		2014		2013			2014			2013
	Net sales	$	—	$	4,291		$	104		$	4,957
	Operating income (loss)	165		(1,275		)	(266		)	(3,021		)

Debt

Debt	6 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Debt	'
	Debt
	A summary of debt is as follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	10.5% Senior Notes, net of premium of $2,807 and $3,144 as of September 30, 2014 and March 31, 2014, respectively	$	357,807		$	358,144
	Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively	18,486			20,095
	Revolving line of credit	25,249			18,449
	Other	540			1,901
	Total debt	402,082			398,589
	Current maturities	(25,826		)	(7,297		)
	Total long-term debt	$	376,256		$	391,292
	The line item “Interest expense” on the Condensed Consolidated Statements of Operations for the quarters and six month periods ended September 30, 2014 and 2013, consists of the following (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Contractual interest expense	$	9,659		$	8,963		$	19,411		$	17,983
	Amortization of debt issuance costs	426			426			852			852
	Amortization of debt (premium) discount	(78		)	42			(126		)	104
	Imputed interest on acquisition related obligations	235			477			522			1,003
	Interest expense on capital lease	45			—			84			—
	Total interest expense	$	10,287		$	9,908		$	20,743		$	19,942
	Revolving Line of Credit
	KEMET Electronics Corporation (“KEC”) and KEMET Electronics Marketing (S) Pte Ltd. (“KEMET Singapore”) (each a “Borrower” and, collectively, the “Borrowers”) entered into a Loan and Security Agreement (the “Loan and Security Agreement”) which provides a $50.0 million revolving line of credit.  A portion of the U.S. and Singapore facilities can be used to issue letters of credit (“Letters of Credit”). Pursuant to an amendment to the Loan and Security Agreement entered into on April 30, 2014, the facilities expire on December 31, 2015.
	As of September 30, 2014 the Company had outstanding borrowings of $25.2 million under the revolving line of credit, of which $13.2 million was borrowed under the U.S. facility at a rate of 5.25% (Base Rate, as defined in the Loan and Security Agreement, plus 2.25%) with no specific repayment date (Base Rate borrowing can be repaid at any time prior to the expiration of the facility), and $12.0 million borrowed under the Singapore facility at a rate of 3.50% (London Interbank Offer Rate (“LIBOR”) plus 3.25% based upon the fixed charge coverage ratio of KEMET Corporation and its subsidiaries on a consolidated basis).  The term of this borrowing was originally 31 days with total interest and principal payable at maturity, on October 28, 2013, however, it has been extended periodically and is currently due on November 23, 2014. For the six month period ended September 30, 2014, the Company borrowed an additional $14.3 million, of which $7.5 million was repaid during the period.  These were the only borrowings under the revolving line of credit, and as of September 30, 2014, the Company's available borrowing capacity under the Loan and Security Agreement was $0.3 million (after the $16.0 million used for letters of credit as described below).
	As described below in the section titled "Advanced Payment from OEM", a standby letter of credit for $16.0 million was delivered to the OEM on October 8, 2012. In fiscal year 2014, the Company issued two letters of credit for €1.1 million ($1.4 million) and €0.7 million ($0.9 million) related to the construction of the new manufacturing location in Italy which were canceled during February 2014 and April 2014, respectively. Outstanding letters of credit reduce the Company's availability under the Loan and Security Agreement.
	Advanced Payment from OEM
	On August 28, 2012, the Company entered into and amended an agreement (the “Agreement”) with an OEM, pursuant to which the OEM agreed to advance the Company $24.0 million (the “Advance Payment”).  As of September 30, 2014 and March 31, 2014, the Company had $18.6 million and $20.4 million, respectively, outstanding under this agreement.  On a monthly basis starting in June 2013, the Company began repaying the OEM an amount equal to a percentage of the aggregate purchase price of the capacitors sold to the OEM the preceding month, not to exceed $1.0 million per month.  Pursuant to the terms of the Agreement, the percentage of the aggregate purchase price of capacitors sold to the OEM used to repay the Advance Payment will double, not to exceed $2.0 million per month, in the event that (1) the OEM provides evidence that the price charged by KEMET for a particular capacitor during any prior quarter was equal to or greater than 110% of the price paid by the OEM or its affiliates for a third-party part qualified for the same product, and shipping in volume during such period; and, (2) agreement cannot be reached between the OEM and the Company for a price adjustment during the current quarter which would bring KEMET’s price within 110% of the third-party price.  In June 2015, the outstanding balance, if any, is due in full.  Pursuant to the terms of the Agreement, the Company delivered to the OEM an irrevocable standby Letter of Credit in the amount of $16.0 million on October 8, 2012; and, on October 22, 2012, the Company received the Advance Payment from the OEM.
	The OEM may demand repayment of the entire balance outstanding or draw upon the Letter of Credit if any of the following events occur while the Agreement is still in effect: (i) the Company commits a material breach of the Agreement, the statement of work or the master purchase agreement between the OEM and the Company; (ii) the Company’s credit rating issued by Standard & Poor’s Financial Services LLC or its successor or Moody’s Investors Services, Inc. or its successors drops below CCC+ or Caa1, respectively; (iii) the Company’s cash balance on the last day of any fiscal quarter is less than $60.0 million; (iv) the Letter of Credit has been terminated without being replaced prior to repayment of the Advance Payment amount; (v) the Company or substantially all of its assets are sold to a party other than a subsidiary of the Company; (vi) all or substantially all of the assets of a subsidiary of the Company, or any of the shares of such subsidiary, are sold, whose assets are used to develop and produce the Goods; (vii) the Company or any subsidiary which accounts for 20% or more of the Company’s consolidated total assets (“Company Entity”) applies for judicial or extra judicial settlement with its creditors, makes an assignment for the benefit of its creditors, voluntarily files for bankruptcy or has a receiver or trustee in bankruptcy appointed by reason of its insolvency, or in the event of an involuntary bankruptcy action, liquidation proceeding, dissolution or similar proceeding is filed against a Company Entity and not dismissed within sixty (60) days.  To the Company’s best knowledge and belief, none of these triggers have been met including maintaining a minimum cash balance since the Company's cash balance (including restricted cash under the OEM agreement) exceeds the $60.0 million threshold.
	10.5% Senior Notes
	As of September 30, 2014 and March 31, 2014, the Company had outstanding $355.0 million in aggregate principal amount of the Company’s 10.5% Senior Notes due May 1, 2018 (the “10.5% Senior Notes”).  The Company had interest payable related to the 10.5% Senior Notes included in the line item “Accrued expenses” on its Condensed Consolidated balance sheets of $15.5 million as of September 30, 2014 and March 31, 2014.

Restructuring_Charges

Restructuring Charges	6 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Restructuring Charges	'
	Restructuring Charges
	The Company is in the process of various restructuring plans to make the Company more competitive by removing excess capacity, relocating production to lower cost locations, and eliminating unnecessary costs throughout the Company.
	A summary of the expenses aggregated in the Condensed Consolidated Statements of Operations line item “Restructuring charges” in the quarters and six month periods ended September 30, 2014 and 2013, is as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Manufacturing relocation costs	$	539		$	548		$	2,223		$	1,023
	Personnel reduction costs	1,148			816			1,294			4,951
	Total restructuring charges	$	1,687		$	1,364		$	3,517		$	5,974
	Quarter Ended September 30, 2014
	The Company incurred $1.7 million in restructuring charges in the quarter ended September 30, 2014 including $1.1 million of personnel reduction costs due to planned headcount reductions in Europe (primarily Landsberg, Germany) as we move production to lower cost regions and $0.5 million of manufacturing relocation costs primarily due to the relocation of equipment from Landsberg, Germany to Suzhou, China and Pontecchio, Italy along with costs associated with the shut-down of the Tantalum production line in Evora, Portugal.
	Six month period ended September 30, 2014
	The Company incurred $3.5 million in restructuring charges in the six month period ended September 30, 2014 including $1.3 million of personnel reduction costs. The personnel reductions were caused by planned headcount reductions in Europe (primarily Landsberg, Germany) ($1.0 million) and a global reduction of overhead ($0.3 million). The remaining $2.2 million included $0.7 million for manufacturing relocation costs primarily due to the relocation of equipment from Landsberg, Germany to Suzhou, China and Pontecchio, Italy and consolidation of manufacturing facilities within Italy and $1.3 million due to the shut-down of the Tantalum production line in Evora, Portugal.
	Quarter Ended September 30, 2013
	The Company incurred $1.4 million in restructuring charges in the quarter ended September 30, 2013 including $0.8 million of personnel reduction costs which is comprised of $0.3 million in termination benefits associated with converting the Weymouth, United Kingdom manufacturing facility into a technology center and $0.5 million related to the Company’s initiative to reduce overhead. The Company also incurred manufacturing relocation costs of $0.5 million for the consolidation of manufacturing operations within Italy and relocation of equipment to Evora, Portugal and Skopje, Macedonia.
	Six month period ended September 30, 2013
	The Company incurred $6.0 million in restructuring charges in the six month period ended September 30, 2013 including $5.0 million related to personnel reduction costs which is primarily comprised of the following: $1.9 million related to the closure of a portion of our innovation center in the U.S., $1.2 million related to the reduction of the solid capacitor production workforce in Mexico, $1.1 million related to the Company’s initiative to reduce overhead, $0.4 million in termination benefits associated with converting the Weymouth, United Kingdom manufacturing facility into a technology center and $0.4 million related to Cassia Integrazione Guadagni Straordinaria (“CIGS”) plan in Italy.  The expense related to CIGS is as a result of an agreement with the labor union which allowed the Company to place up to 170 employees, on a rotation basis, on the CIGS plan to save labor costs. CIGS is a temporary plan to save labor costs whereby a company may temporarily “lay off” employees while the government continues to pay their wages for a maximum of 12 months during the program. The employees who are in CIGS are not working, but are still employed by the Company. Only employees that are not classified as management or executive level personnel can participate in the CIGS program and upon termination of the plan, the affected employees return to work.
	In addition to these personnel reduction costs, the Company incurred manufacturing relocation costs of $1.0 million due to the consolidation of manufacturing facilities within Italy and relocation of manufacturing equipment to Evora, Portugal and Skopje, Macedonia.
	Reconciliation of restructuring liability
	A reconciliation of the beginning and ending liability balances for restructuring charges included in the line items “Accrued expenses” and “Other non-current obligations” on the Condensed Consolidated Balance Sheets for the quarters and six month periods ended September 30, 2014 and 2013 are as follows (amounts in thousands):
		Quarter Ended September 30, 2014						Quarter Ended September 30, 2013
		Personnel			Manufacturing			Personnel			Manufacturing
		Reductions			Relocations			Reductions			Relocations
	Beginning of period	$	3,384		$	—		$	8,947		$	—
	Costs charged to expense	1,148			539			816			548
	Costs paid or settled	(1,264		)	(539		)	(4,648		)	(548		)
	Change in foreign exchange	(241		)	—			155			—
	End of period	$	3,027		$	—		$	5,270		$	—
		Six Month Period Ended September 30, 2014						Six Month Period Ended September 30, 2013
		Personnel			Manufacturing			Personnel			Manufacturing
		Reductions			Relocations			Reductions			Relocations
	Beginning of period	$	6,217		$	—		$	13,509		$	567
	Costs charged to expense	$	1,294		$	2,223		$	4,951		$	1,023
	Costs paid or settled	$	(4,187	)	$	(2,223	)	$	(13,517	)	$	(1,590	)
	Change in foreign exchange	$	(297	)	$	—		$	327		$	—
	End of period	$	3,027		$	—		$	5,270		$	—

Comprehensive_Income_Loss_and_

Comprehensive Income (Loss) and Accumulated Other Comprehensive Income	6 Months Ended
	Sep. 30, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]	'
Comprehensive Income (Loss) and Accumulated Other Comprehensive Income	'
	Comprehensive Income (Loss) and Accumulated Other Comprehensive Income
	Changes in Accumulated Other Comprehensive Income (Loss) ("AOCI") for the quarters ended September 30, 2014 and 2013 include the following components (amounts in thousands):
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at June 30, 2014	$	22,235		$	(7,326	)	$	1,412		$	1,262		$	17,583
	Other comprehensive income (loss) before reclassifications	(13,659		)	—			—			2,982			(10,677		)
	Amounts reclassified out of AOCI	—			81			(52		)	—			29
	Other comprehensive income (loss)	(13,659		)	81			(52		)	2,982			(10,648		)
	Balance at September 30, 2014	$	8,576		$	(7,245	)	$	1,360		$	4,244		$	6,935
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at June 30, 2013	$	15,810		$	(7,487	)	$	1,748		$	(651	)	$	9,420
	Other comprehensive income (loss) before reclassifications	6,359			—			—			(524		)	5,835
	Amounts reclassified out of AOCI	—			121			(61		)	—			60
	Other comprehensive income (loss)	6,359			121			(61		)	(524		)	5,895
	Balance at September 30, 2013	22,169			$	(7,366	)	$	1,687		$	(1,175	)	$	15,315
	Changes in Accumulated Other Comprehensive Income (Loss) for the six month periods ended September 30, 2014 and 2013 include the following components (amounts in thousands):
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at March 31, 2014	$	23,335		$	(7,386	)	$	1,464		$	771		$	18,184
	Other comprehensive income (loss) before reclassifications	(14,759		)	—			—			3,473			(11,286		)
	Amounts reclassified out of AOCI	—			141			(104		)	—			37
	Other comprehensive income (loss)	(14,759		)	141			(104		)	3,473			(11,249		)
	Balance at September 30, 2014	$	8,576		$	(7,245	)	$	1,360		$	4,244		$	6,935
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at March 31, 2013	$	13,538		$	(7,662	)	$	1,818		—			$	7,694
	Other comprehensive income (loss) before reclassifications	8,631			—			—			(1,175		)	7,456
	Amounts reclassified out of AOCI	—			296			(131		)	—			165
	Other comprehensive income (loss)	8,631			296			(131		)	(1,175		)	7,621
	Balance at September 30, 2013	$	22,169		$	(7,366	)	$	1,687		$	(1,175	)	$	15,315
	-1	Due primarily to the Company’s permanent re-investment assertion relating to foreign earnings, there were no significant deferred tax effects associated with the cumulative currency translation gains and losses during the quarters and six month periods ended September 30, 2014 and 2013.
	-2	Ending balance is net of tax of $2.2 million and $2.3 million as of September 30, 2014 and September 30, 2013, respectively.

Investment_in_NEC_TOKIN

Investment in NEC TOKIN	6 Months Ended
	Sep. 30, 2014
Equity Method Investments and Joint Ventures [Abstract]	'
Investment in NEC TOKIN	'
	Investment in NEC TOKIN
	On March 12, 2012, KEC, a wholly owned subsidiary of the Company, entered into a Stock Purchase Agreement (the “Stock Purchase Agreement”) to acquire 51% of the common stock (representing a 34% economic interest) of NEC TOKIN Corporation (“NEC TOKIN”), a manufacturer of tantalum capacitors, electro-magnetic, electro-mechanical and access devices, (the “Initial Purchase”) from NEC Corporation (“NEC”) of Japan. The transaction closed on February 1, 2013, at which time KEC paid a purchase price of $50.0 million for new shares of common stock of NEC TOKIN (the “Initial Closing”). The Company accounts for its investment using the equity method in a non-consolidated variable interest entity since KEC does not have the power to direct significant activities of NEC TOKIN.
	In connection with KEC’s execution of the Stock Purchase Agreement, KEC entered into a Stockholders’ Agreement (the “Stockholders’ Agreement”) with NEC TOKIN and NEC, which provides for restrictions on transfers of NEC TOKIN’s capital stock, certain tag-along and first refusal rights on transfer, restrictions on NEC’s ability to convert the preferred stock of NEC TOKIN held by it, certain management services to be provided to NEC TOKIN by KEC (or an affiliate of KEC) and certain board representation rights. KEC holds four of seven NEC TOKIN director positions. However, NEC has significant board rights.
	Concurrent with execution of the Stock Purchase Agreement and the Stockholders’ Agreement, KEC entered into an Option Agreement (the “Option Agreement”) with NEC, which was amended on August 29, 2014, whereby KEC may purchase additional shares of NEC TOKIN common stock from NEC TOKIN for a purchase price of $50.0 million resulting in an economic interest of approximately 49% while maintaining ownership of 51% of NEC TOKIN’s common stock (the “First Call Option”) by providing notice of the First Call Option between the Initial Closing and April 30, 2015. Upon providing such notice, but not before April 1, 2015, KEC may also exercise an option to purchase all outstanding capital stock of NEC TOKIN from its stockholders, primarily NEC, for a purchase price based on the greater of six times LTM EBITDA (as defined in the Option Agreement) less the previous payments and certain other adjustments, or the outstanding amount of NEC TOKIN’s debt obligation to NEC (the “Second Call Option”) by providing notice of the Second Call Option by May 31, 2018. From April 1, 2015 through May 31, 2018, NEC may require KEC to purchase all outstanding capital stock of NEC TOKIN from its stockholders, primarily NEC (the "Put Option"). However, in the event that KEC issues new debt securities principally to refinance its outstanding 10.5% senior notes due 2018 and its currently outstanding credit agreement, including amounts to pay related fees and expenses and to use for general corporate purposes (“Refinancing Notes”), prior to NEC’s delivery of its notification of exercise of the Put Option, then the earliest date NEC may exercise the Put Option is automatically extended to the day immediately following the final scheduled maturity date of such Refinancing Notes, or in the event such Refinancing Notes are redeemed in full prior to such final scheduled maturity date, then on the day immediately following the date of such full redemption, but in any event beginning no later than November 1, 2019. If not previously exercised, the Put Option will expire on October 31, 2023.
	The purchase price for the Put Option will be based on the greater of six times LTM EBITDA less previous payments and certain other adjustments, or the outstanding amount of NEC TOKIN’s debt obligation to NEC as of the date the Put Option is exercised. The purchase price for the Put Option is reduced by the amount of NEC TOKIN’s debt obligation to NEC which KEC will assume. The determination of the purchase price will be modified in the event there is a disagreement between NEC and KEC under the Stockholders’ Agreement.
	The Company has marked these options to fair value and in the quarter and six month periods ended September 30, 2014 recognized a $6.6 million and $10.7 million gain, respectively, which was included on the line item “Other (income) expense, net” in the Condensed Consolidated Statement of Operations. The line item “Other assets” on the Condensed Consolidated Balance Sheets includes $14.3 million and $3.6 million, respectively as of September 30, 2014 and March 31, 2014 related to the options.
	Summarized financial information for NEC TOKIN follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	Current assets	$	232,991		$	245,709
	Non-current assets	292,440			302,161
	Current liabilities	123,962			120,929
	Non-current liabilities	325,877			360,908
		Three Months Ended						Six Month Periods Ended September 30,
		September 30,
		2014			2013			2014			2013
	Sales	$	129,677		$	135,074		$	252,085		$	258,266
	Gross profit	26,387			25,569			53,065			43,869
	Net income (loss)	2,454			(3,213		)	(700		)	(11,942		)
	A reconciliation between NEC TOKIN's net loss and KEMET's equity investment loss follows (amounts in thousands):
		Three Months Ended						Six Month Periods Ended September 30,
		September 30,
		2014			2013			2014			2013
	NEC TOKIN net income (loss)	2,454			(3,213		)	(700		)	(11,942		)
	KEMET's equity ownership %	34		%	34		%	34		%	34		%
	Equity income (loss) from NEC TOKIN before Adjustments	834			(1,092		)	(238		)	(4,060		)
	Adjustments:
	Amortization and depreciation	(602		)	(405		)	(1,205		)	(814		)
	Inventory valuation	—			254			—			254
	Equity income (loss) from NEC TOKIN	$	232		$	(1,243	)	$	(1,443	)	$	(4,620	)
	A reconciliation between NEC TOKIN's net assets and KEMET's investment in NEC TOKIN balance follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	Investment in NEC TOKIN	$	48,449		$	46,419
	Purchase price accounting basis adjustment:
	Property, plant and equipment	7,116			7,325
	Technology	(15,450		)	(16,261		)
	Long-term debt	(4,254		)	(4,754		)
	Goodwill	(9,326		)	(9,326		)
	Other	(834		)	(952		)
	KEMET's 34% economic interest of NEC TOKIN's net assets	$	25,701		$	22,451
	The above basis differences (except Goodwill) are being amortized over the respective estimated life of the assets. As of September 30, 2014, KEC’s maximum loss exposure as a result of its investments in NEC TOKIN is limited to the aggregate of the carrying value of the investment and any accounts receivable balance due from NEC TOKIN.  For the quarter and six month periods ended September 30, 2014, KEMET recorded sales of $4.0 million and $5.9 million, respectively, to NEC TOKIN and as of September 30, 2014 and March 31, 2014, KEMET's accounts receivable from NEC TOKIN was $1.8 million and $2.0 million, respectively. And KEMET's accounts payable to NEC TOKIN was $0.1 million as of September 30, 2014 and March 31, 2014. In accordance with the Stockholders’ Agreement, KEC entered into a management services agreement with NEC TOKIN to provide services for which KEC would be reimbursed.  As of September 30, 2014 and March 31, 2014, KEC’s receivable balance under this agreement was $0.5 million and $0.7 million, respectively.
	In March and April, 2014, NEC TOKIN and certain of its subsidiaries received inquiries, requests for information and other communications from government authorities in China, the United States, the European Commission, Japan and South Korea concerning alleged anti-competitive activities within the capacitor industry.  Subsequently, NEC TOKIN has also communicated with government authorities regarding related investigations in Taiwan and Singapore. The investigations are continuing at various stages.  In addition, beginning July 2014, NEC TOKIN and its subsidiary, NEC TOKIN America, Inc., have been named, along with more than 20 other capacitor manufacturers and subsidiaries, as defendants in purported antitrust class action suits in the United States and Canada. As of this date, except for legal expenses, NEC TOKIN has not recorded an accrual as a result of the investigations and civil litigation.

Segment_and_Geographic_Informa

Segment and Geographic Information	6 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment and Geographic Information	'
	Segment and Geographic Information
	The Company is organized into two business groups: Solid Capacitors and Film and Electrolytic.  The business groups are responsible for their respective manufacturing sites as well as their respective research and development efforts. Consistent with management reporting, the Company does not allocate indirect Selling, general and administrative (“SG&A”) and Research and development (“R&D”) expenses to the business groups.
	Solid Capacitors
	Operating in nine manufacturing sites in the United States, Mexico, China and Portugal, Solid Capacitors primarily produces tantalum, aluminum, polymer and ceramic capacitors which are sold globally.  Solid Capacitors also produces tantalum powder used in the production of tantalum capacitors and has a product innovation center in the United States.
	Film and Electrolytic
	Operating in twelve manufacturing sites throughout Europe, Asia, and the United States, Film and Electrolytic primarily produces film, paper, and electrolytic capacitors which are sold globally. Film and Electrolytic also manufactures etched foils utilized as a core component in the manufacture of electrolytic capacitors. In addition, this business group has product innovation centers in the United Kingdom, Italy, Germany and Sweden.
	The following table reflects each business group’s net sales, operating income (loss), depreciation and amortization expenses and sales by region for the quarters and six month periods ended September 30, 2014 and 2013 (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Net sales:
	Solid Capacitors	$	163,019		$	157,714		$	322,809		$	307,115
	Film and Electrolytic	52,274			50,735			105,365			103,391
		$	215,293		$	208,449		$	428,174		$	410,506
	Operating income (loss) (1):
	Solid Capacitors	$	38,386		$	25,386		$	68,120		$	38,178
	Film and Electrolytic	(917		)	(2,211		)	(6,993		)	(8,513		)
	Unallocated operating expenses	(24,699		)	(21,590		)	(48,963		)	(46,292		)
		$	12,770		$	1,585		$	12,164		$	(16,627	)
	Depreciation and amortization expense:
	Solid Capacitors	$	5,463		$	7,302		$	10,941		$	14,612
	Film and Electrolytic	3,201			3,183			7,018			7,598
	Corporate	1,513			1,466			3,015			3,380
		$	10,177		$	11,951		$	20,974		$	25,590
	___________________
	-1	Restructuring charges included in Operating income (loss) are as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Restructuring charges:
	Solid Capacitors	$	169		$	99		$	1,399		$	3,145
	Film and Electrolytic	1,500			1,062			1,989			2,472
	Corporate	18			203			129			357
		$	1,687		$	1,364		$	3,517		$	5,974
	___________________
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Sales by region:
	North and South America (“Americas”)	$	72,167		$	65,398		$	138,150		$	124,751
	Europe, Middle East, Africa (“EMEA”)	69,930			68,166			147,135			141,157
	Asia and Pacific Rim (“APAC”)	73,196			74,885			142,889			144,598
		$	215,293		$	208,449		$	428,174		$	410,506
	The following table reflects each business group’s total assets as of September 30, 2014 and March 31, 2014 (amounts in thousands):
		30-Sep-14			31-Mar-14
	Total assets:
	Solid Capacitors	$	475,009		$	479,377
	Film and Electrolytic	254,396			287,861
	Corporate	87,822			76,429
		$	817,227		$	843,667

Stockbased_Compensation

Stock-based Compensation	6 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Stock-based Compensation	'
	Stock-based Compensation
	The Company’s stock-based compensation plans are broad-based, long-term retention programs intended to attract and retain talented employees and align stockholder and employee interests. At September 30, 2014, the Company had four stock option plans that reserved shares of common stock for issuance to executives and key employees: the 1992 Key Employee Stock Option Plan, the 1995 Executive Stock Option Plan, the 2004 Long-Term Equity Incentive Plan (collectively, the “Prior Plans”) and the 2011 Omnibus Equity Incentive Plan (as amended by the 2014 Amendment and Restatement of the KEMET Corporation 2011 Omnibus Equity Incentive Plan) (the “2011 Incentive Plan”).  Upon adoption and approval of the 2011 Incentive Plan, no further awards were permitted to be granted under the Company's prior plans. The 2011 Incentive Plan authorizes the Company to provide equity-based compensation in the form of: (1) stock options, including incentive stock options, entitling the optionee to favorable tax treatment under Section 422 of the Code; (2) stock appreciation rights; (3) restricted stock and restricted stock units; (4) other share-based awards; and (5) performance awards. Options issued under these plans vest within one to three years and expire ten years from the grant date. The Company grants restricted stock units to members of the Board of Directors, the Chief Executive Officer and a limited group of executives. Once vested and settled, restricted stock units are converted into restricted stock and cannot be sold until 90 days after termination of service with the Company, or until the individual achieves the targeted ownership under the Company’s stock ownership guidelines, and only to the extent that such ownership level exceeds the target. Compensation expense is recognized over the respective vesting periods.
	Historically, the Board of Directors of the Company has approved annual Long Term Incentive Plans (“LTIP”) which cover two year periods and are primarily based upon the achievement of an Adjusted EBITDA target for the two-year period. At the time of the award, the individual plans entitle the participants to receive cash or restricted stock units, or a combination of both as determined by the Company’s Board of Directors. The 2013/2014 LTIP, 2014/2015 LTIP and 2015/2016 LTIP also awarded restricted stock units which vest over the course of three years from the anniversary of the establishment of the plan and are not subject to a performance metric. The Company assesses the likelihood of meeting the Adjusted EBITDA financial metric on a quarterly basis and adjusts compensation expense to match expectations. Any related liability is reflected in the line item “Accrued expenses” on the Condensed Consolidated Balance Sheets and any restricted stock unit commitment is reflected in the line item “Additional paid-in capital” on the Condensed Consolidated Balance Sheets.
	The compensation expense associated with stock-based compensation for the quarters ended September 30, 2014 and 2013 is recorded on the Condensed Consolidated Statements of Operations as follows (amounts in thousands):
		Quarter Ended September 30, 2014						Quarter Ended September 30, 2013
		Stock		Restricted		LTIPs		Stock		Restricted			LTIPs
		Options		Stock				Options		Stock
	Cost of sales	$	61	$	21	$	276	$	135	$	(31	)	$	124
	Selling, general and administrative expenses	86		66		344		137		72			169
	Research and development	5		—		99		9		—			44
	Total	$	152	$	87	$	719	$	281	$	41		$	337
	The compensation expense associated with stock-based compensation for the six month periods ended September 30, 2014 and 2013 is recorded on the Condensed Consolidated Statements of Operations as follows (amounts in thousands):
		Six Month Period Ended September 30, 2014						Six Month Period Ended September 30, 2013
		Stock		Restricted		LTIPs		Stock		Restricted			LTIPs
		Options		Stock				Options		Stock
	Cost of sales	$	169	$	44	$	492	$	273	$	32		$	238
	Selling, general and administrative expenses	201		244		632		284		305			383
	Research and development	9		—		161		20		—			93
	Total	$	379	$	288	$	1,285	$	577	$	337		$	714
	In the “Operating activities” section of the Condensed Consolidated Statements of Cash Flows, stock-based compensation expense was treated as an adjustment to Net income (loss) for the quarters and six month periods ended September 30, 2014, and 2013. Approximately six thousand and twenty-eight thousand stock options were exercised in the six month periods ended September 30, 2014 and 2013, respectively.

Income_Taxes

Income Taxes	6 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
Income Taxes	'
	Income Taxes
	During the quarter ended September 30, 2014, the Company incurred $2.6 million of income tax expense which is related to income taxes for continuing foreign operations. Income tax expense for the six month period ended September 30, 2014 was $3.9 million related to income taxes for continuing foreign operations. In addition, the Company incurred $1.0 million income tax expense for the quarter ended September 30, 2014 and $1.9 million of income tax expense for the six month period ended September 30, 2014 related to the income (loss) from discontinued operations.
	During the quarter ended September 30, 2013, the Company incurred $1.4 million of income tax expense which was comprised of $1.3 million related to income taxes for continuing foreign operations and $0.1 million of state income tax expense. Income tax expense for the six month period ended September 30, 2013 was $3.3 million, comprised of $3.2 million related to income taxes for foreign operations and $0.1 million of state income tax expense. In addition, the Company incurred $0.1 million income tax benefit for the quarter ended September 30, 2013 and $0.4 million of income tax benefit for the six month period ended September 30, 2013 related to the income (loss) from discontinued operations.
	There is no U.S. federal income tax benefit from the quarters and six month periods ended September 30, 2014 and 2013 due to a valuation allowance recorded on deferred tax assets.

Basic_and_Diluted_Net_Loss_Per

Basic and Diluted Net Loss Per Common Share	6 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Basic and Diluted Net Income (Loss) Per Common Share	'
	Basic and Diluted Net Income (Loss) Per Common Share
	The following table presents basic EPS and diluted EPS (amounts in thousands, except per share data):
		Quarters Ended September 30,							Quarters Ended Six Month Periods Ended September 30,
		2014				2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	7,730			$	(11,945	)	$	(2,753	)	$	(45,575	)
	Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	(1,400		)		(1,151		)	5,543			(2,661		)
	Net income (loss)	$	6,330			$	(13,096	)	$	2,790		$	(48,236	)
	Denominator:
	Weighted-average shares outstanding:
	Basic	45,400				45,092			45,337			45,057
	Assumed conversion of employee stock grants	430				—			463			—
	Assumed conversion of warrants	6,691				—			6,762			—
	Diluted	52,521				45,092			52,562			45,057
	Net income (loss) per basic share:
	Income (loss) from continuing operations	$	0.17			$	(0.26	)	$	(0.06	)	$	(1.01	)
	Income (loss) from discontinued operations	$	(0.03	)		$	(0.03	)	$	0.12		$	(0.06	)
	Net income (loss)	$	0.14			$	(0.29	)	$	0.06		$	(1.07	)
	Net income (loss) per diluted share:
	Income (loss) from continuing operations	$	0.15			$	(0.26	)	$	(0.05	)	$	(1.01	)
	Income (loss) from discontinued operations	$	(0.03	)		$	(0.03	)	$	0.11		$	(0.06	)
	Net income (loss)	$	0.12			$	(0.29	)	$	0.06		$	(1.07	)
	Common stock equivalents that could potentially dilute net income (loss) per basic share in the future, but were not included in the computation of diluted earnings per share because the impact would have been anti-dilutive, are as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014		2013
	Assumed conversion of employee stock grants	1,001			2,234			1,030		1,941
	Assumed conversion of warrants	—			6,371			—		6,540

Concentrations_of_Risks

Concentrations of Risks	6 Months Ended
	Sep. 30, 2014
Risks and Uncertainties [Abstract]	'
Concentrations of Risks	'
	Concentrations of Risks
	The Company sells to customers globally and, as the Company generally does not require collateral from its customers, on a monthly basis the Company evaluates customer account balances in order to assess the Company’s financial risks of collection.  One customer accounted for over 10% of the Company’s net sales in the quarters and six month periods ended September 30, 2014 and 2013.  There were no accounts receivable balances from any customer exceeding 10% of gross accounts receivable as of September 30, 2014 and March 31, 2014.
	Electronics distributors are an important distribution channel in the electronics industry and accounted for 44% and 43% of the Company’s net sales in the six month periods ended September 30, 2014 and 2013, respectively.  As a result of the Company’s concentration of sales to electronics distributors, the Company may experience fluctuations in the Company’s operating results as electronics distributors experience fluctuations in end-market demand or adjust their inventory stocking levels.

Condensed_Consolidating_Financ

Condensed Consolidating Financial Statements	6 Months Ended
	Sep. 30, 2014
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'
Condensed Consolidating Financial Statements	'
	Condensed Consolidating Financial Statements
	The 10.5% Senior Notes are fully and unconditionally guaranteed, jointly and severally, on a senior basis by certain of the Company’s 100% owned domestic subsidiaries (“Guarantor Subsidiaries”) and secured by a first priority lien on 51% of the capital stock of certain of our foreign restricted subsidiaries (“Non-Guarantor Subsidiaries”).  The Company’s Guarantor Subsidiaries and Non-Guarantor Subsidiaries are not consistent with the Company’s business groups or geographic operations; accordingly this basis of presentation is not intended to present the Company’s financial condition, results of operations or cash flows for any purpose other than to comply with the specific requirements for subsidiary guarantor reporting. The Company is required to present condensed consolidating financial information in order for the subsidiary guarantors of the Company’s public debt to be exempt from reporting under the Securities Exchange Act of 1934, as amended.
	Condensed consolidating financial statements for the Company’s Guarantor Subsidiaries and Non-Guarantor Subsidiaries are presented in the following tables (amounts in thousands):
	Condensed Consolidating Balance Sheet
	September 30, 2014
	(Unaudited)
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	ASSETS
	Current assets:
	Cash and cash equivalents	$	641		$	29,984		$	20,951		$	—		$	51,576
	Accounts receivable, net	—			41,010			54,571			—			95,581
	Intercompany receivable	320,305			348,367			217,971			(886,643		)	—
	Inventories, net	—			127,232			61,601			—			188,833
	Prepaid expenses and other	3,145			16,610			23,415			(2,941		)	40,229
	Deferred income taxes	—			1,957			4,612			—			6,569
	Total current assets	324,091			565,160			383,121			(889,584		)	382,788
	Property and equipment, net	316			101,498			173,684			—			275,498
	Goodwill	—			35,584			—			—			35,584
	Intangible assets, net	—			27,688			7,689			—			35,377
	Investment in NEC TOKIN	—			48,449			—			—			48,449
	Investments in subsidiaries	421,754			424,312			30,285			(876,351		)	—
	Restricted cash	—			12,955			—			—			12,955
	Deferred income taxes	—			969			5,454			—			6,423
	Other assets	4,750			14,486			917			—			20,153
	Long-term intercompany receivable	74,603			58,634			2,800			(136,037		)	—
	Total assets	$	825,514		$	1,289,735		$	603,950		$	(1,901,972	)	$	817,227
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	Current liabilities:
	Current portion of long-term debt	$	18,486		$	6,800		$	540		$	—		$	25,826
	Accounts payable	93			35,621			36,915			—			72,629
	Intercompany payable	208,989			590,222			87,432			(886,643		)	—
	Accrued expenses	25,301			12,692			28,407			—			66,400
	Income taxes payable and deferred income taxes	—			2,923			363			(2,941		)	345
	Total current liabilities	252,869			648,258			153,657			(889,584		)	165,200
	Long-term debt, less current portion	357,807			6,449			12,000			—			376,256
	Other non-current obligations	—			3,626			48,620			—			52,246
	Deferred income taxes	—			4,191			4,496			—			8,687
	Long-term intercompany payable	—			74,603			61,434			(136,037		)	—
	Stockholders’ equity	214,838			552,608			323,743			(876,351		)	214,838
	Total liabilities and stockholders’ equity	$	825,514		$	1,289,735		$	603,950		$	(1,901,972	)	$	817,227
	Condensed Consolidating Balance Sheet (1)
	March 31, 2014
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	ASSETS
	Current assets:
	Cash and cash equivalents	$	616		$	22,200		$	35,113		$	—		$	57,929
	Accounts receivable, net	—			49,462			49,485			—			98,947
	Intercompany receivable	318,582			329,211			203,018			(850,811		)	—
	Inventories, net	—			119,340			68,634			—			187,974
	Prepaid expenses and other	3,146			15,286			21,380			(2,941		)	36,871
	Deferred income taxes	—			1,022			5,673			—			6,695
	Current assets of discontinued operations	—			—			12,160			—			12,160
	Total current assets	322,344			536,521			395,463			(853,752		)	400,576
	Property and equipment, net	329			104,874			187,445			—			292,648
	Goodwill	—			35,584			—			—			35,584
	Intangible assets, net	—			28,380			8,804			—			37,184
	Investment in NEC TOKIN	—			46,419			—			—			46,419
	Investments in subsidiaries	402,090			424,386			30,285			(856,761		)	—
	Restricted cash	—			13,512			—			—			13,512
	Deferred income taxes	—			1,010			5,768			—			6,778
	Other assets	5,415			3,895			820			—			10,130
Non-current assets of discontinued operations	—			—			836			—			836
Long-term intercompany receivable	81,746			60,663			2,801			(145,210		)	—
Total assets	$	811,924		$	1,255,244		$	632,222		$	(1,855,723	)	$	843,667
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt	$	5,988		$	—		$	1,309		$	—		$	7,297
Accounts payable	84			36,579			38,155			—			74,818
Intercompany payable	176,624			570,535			103,652			(850,811		)	—
Accrued expenses	34,236			13,698			28,534			—			76,468
Income taxes payable and deferred income taxes	—			2,909			1,012			(2,941		)	980
Current liabilities of discontinued operations	—			—			7,269			—			7,269
Total current liabilities	216,932			623,721			179,931			(853,752		)	166,832
Long-term debt, less current portion	372,251			6,449			12,592			—			391,292
Other non-current obligations	857			3,311			51,696			—			55,864
Deferred income taxes	—			3,258			1,945			—			5,203
Non-current liabilities of discontinued operations	—			—			2,592			—			2,592
Long-term intercompany payable	—			81,747			63,463			(145,210		)	—
Stockholders’ equity	221,884			536,758			320,003			(856,761		)	221,884
Total liabilities and stockholders’ equity	$	811,924		$	1,255,244		$	632,222		$	(1,855,723	)	$	843,667
(1) Derived from audited financial statements.
Condensed Consolidating Statement of Operations
For the Quarter Ended September 30, 2014
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Net sales	$	57		$	250,019		$	198,983		$	(233,766	)	$	215,293
Operating costs and expenses:
Cost of sales	561			211,328			175,839			(218,190		)	169,538
Selling, general and administrative expenses	13,056			15,071			12,959			(15,576		)	25,510
Research and development	140			4,247			1,951			—			6,338
Restructuring charges	—			192			1,495			—			1,687
Net (gain) loss on sales and disposals of assets	(9		)	43			(584		)	—			(550		)
Total operating costs and expenses	13,748			230,881			191,660			(233,766		)	202,523
Operating income (loss)	(13,691		)	19,138			7,323			—			12,770
Interest income	—			—			(3		)				(3		)
Interest expense	9,726			263			298						10,287
Other (income) expense, net	(12,975		)	9,355			(3,975		)	—			(7,595		)
Equity in earnings of subsidiaries	(16,772		)	—			—			16,772			—
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	6,330			9,520			11,003			(16,772		)	10,081
Income tax expense	—			210			2,373			—			2,583
Income (loss) from continuing operations before equity income from NEC TOKIN	6,330			9,310			8,630			(16,772		)	7,498
Equity income (loss) from NEC TOKIN	—			232			—			—			232
Income (loss) from continuing operations	6,330			9,542			8,630			(16,772		)	7,730
Income (loss) from discontinued operations	—			593			(1,993		)	—			(1,400		)
Net income (loss)	$	6,330		$	10,135		$	6,637		$	(16,772	)	$	6,330
Condensed Consolidating Statements of Comprehensive Income (Loss)
Quarter Ended September 30, 2014
(Unaudited)
Comprehensive income (loss)	$	(44	)	$	14,431		$	(1,933	)	$	(16,772	)	$	(4,318	)
Condensed Consolidating Statement of Operations
For the Quarter Ended September 30, 2013
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Net sales	$	67		$	245,786		$	208,798		$	(246,202	)	$	208,449
Operating costs and expenses:
Cost of sales	299			222,882			184,945			(230,594		)	177,532
Selling, general and administrative expenses	9,944			16,075			11,904			(15,608		)	22,315
Research and development	54			3,791			1,766			—			5,611
Restructuring charges	—			446			918			—			1,364
Net (gain) loss on sales and disposals of assets	—			18			24			—			42
Total operating costs and expenses	10,297			243,212			199,557			(246,202		)	206,864
Operating income (loss)	(10,230		)	2,574			9,241			—			1,585
Non-operating (income) expense:
Interest income	(3		)	—			(8		)	—			(11		)
Interest expense	10,065			226			(383		)	—			9,908
Other (income) expense, net	(9,915		)	9,639			1,222			—			946
Equity in earnings of subsidiaries	2,703			—			—			(2,703		)	—
Income (loss) from continuing operations before income taxes	(13,080		)	(7,291		)	8,410			2,703			(9,258		)
Income tax expense	—			33			1,411			—			1,444
Income (loss) from continuing operations before equity loss from NEC TOKIN	(13,080		)	(7,324		)	6,999			2,703			(10,702		)
Equity income (loss) from NEC TOKIN	—			(1,243		)	—			—			(1,243		)
Income (loss) from continuing operations	(13,080		)	(8,567		)	6,999			2,703			(11,945		)
Income (loss) from discontinued operations	(16		)	(250		)	(885		)	—			(1,151		)
Net income (loss)	$	(13,096	)	$	(8,817	)	$	6,114		$	2,703		$	(13,096	)
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the Quarter Ended September 30, 2013
(Unaudited)
Comprehensive income (loss)	$	(10,576	)	$	(9,936	)	$	10,608		$	2,703		$	(7,201	)
Condensed Consolidating Statement of Operations
For the Six Month Period Ended September 30, 2014
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Net sales	$	110		$	505,596		$	400,202		$	(477,734	)	$	428,174
Operating costs and expenses:
Cost of sales	1,025			434,000			360,747			(446,310		)	349,462
Selling, general and administrative expenses	24,145			32,223			25,345			(31,424		)	50,289
Research and development	206			8,597			4,124			—			12,927
Restructuring charges	—			562			2,955			—			3,517
Net gain (loss) on sales and disposals of assets	(9		)	230			(406		)	—			(185		)
Total operating costs and expenses	25,367			475,612			392,765			(477,734		)	416,010
Operating income (loss)	(25,257		)	29,984			7,437			—			12,164
Non-operating (income) expense:
Interest income	—			—			(6		)	—			(6		)
Interest expense	19,524			663			556			—			20,743
Non-operating (income) expense, net	(23,801		)	16,799			(4,126		)	—			(11,128		)
Equity in earnings of subsidiaries	(23,770		)	—			—			23,770			—
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	2,790			12,522			11,013			(23,770		)	2,555
Income tax expense	—			233			3,632			—			3,865
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	2,790			12,289			7,381			(23,770		)	(1,310		)
Equity income (loss) from NEC TOKIN	—			(1,443		)	—			—			(1,443		)
Income (loss) from continuing operations	2,790			10,846			7,381			(23,770		)	(2,753		)
Income (loss) from discontinued operations	—			104			5,439			—			5,543
Net income (loss)	$	2,790		$	10,950		$	12,820		$	(23,770	)	$	2,790
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the Six Month Period Ended September 30, 2014
(Unaudited)
Comprehensive income (loss)	$	(4,354	)	$	15,850		$	3,815		$	(23,770	)	$	(8,459	)
Condensed Consolidating Statement of Operations
For the Six Month Period Ended September 30, 2013
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Net sales	$	86		$	483,109		$	415,743		$	(488,432	)	$	410,506
Operating costs and expenses:
Cost of sales	691			449,930			373,114			(462,690		)	361,045
Selling, general and administrative expenses	20,555			28,132			25,450			(25,742		)	48,395
Research and development	144			8,066			3,467			—			11,677
Restructuring charges	—			2,380			3,594			—			5,974
Net (gain) loss on sales and disposals of assets	—			18			24			—			42
Total operating costs and expenses	21,390			488,526			405,649			(488,432		)	427,133
Operating income (loss)	(21,304		)	(5,417		)	10,094			—			(16,627		)
Non-operating (income) expense:
Interest income	(11		)	(3		)	(161		)	—			(175		)
Interest expense	20,194			478			(730		)	—			19,942
Other (income) expense, net	(19,975		)	20,446			830			—			1,301
Equity in earnings of subsidiaries	26,698			—			—			(26,698		)	—
Income (loss) from continuing operations before income taxes	(48,210		)	(26,338		)	10,155			26,698			(37,695		)
Income tax expense (benefit)	—			89			3,171			—			3,260
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	(48,210		)	(26,427		)	6,984			26,698			(40,955		)
Equity income (loss) from NEC TOKIN	—			(4,620		)	—			—			(4,620		)
Income (loss) from continuing operations	(48,210		)	(31,047		)	6,984			26,698			(45,575		)
Income (loss) from discontinued operations	(26		)	(567		)	(2,068		)	—			(2,661		)
Net income (loss)	$	(48,236	)	$	(31,614	)	$	4,916		$	26,698		$	(48,236	)
Condensed Consolidating Statements of Comprehensive Income (Loss)
For the Six Month Period Ended September 30, 2013
(Unaudited)
Comprehensive income (loss)	$	(44,087	)	$	(34,978	)	$	11,752		$	26,698		$	(40,615	)
Condensed
Consolidating Statement of Cash Flows
For the Six Month Period Ended September 30, 2014
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	$	12,417		$	4,666		$	(15,489	)	$	—		$	1,594
Investing activities:
Capital expenditures	—			(5,514		)	(6,461		)	—			(11,975		)
Change in restricted cash	—			558			—			—			558
Proceeds from sale of assets	—			2,273			178			—			2,451
Proceeds from sale of discontinued operations	—			—			10,125			—			10,125
Net cash used in investing activities	—			(2,683		)	3,842			—			1,159
Financing activities:
Proceeds from revolving line credit	—			14,300			—			—			14,300
Payments of revolving line credit	—			(7,500		)	—			—			(7,500		)
Deferred acquisition payments	(10,597		)	(1,000		)	—			—			(11,597		)
Payments of long-term debt	(1,820		)	—			(1,315		)	—			(3,135		)
Proceeds from exercise of stock options	25			—			—			—			25
Net cash provided by (used in) financing activities	(12,392		)	5,800			(1,315		)	—			(7,907		)
Net increase (decrease) in cash and cash equivalents	25			7,783			(12,962		)	—			(5,154		)
Effect of foreign currency fluctuations on cash	—			1			(1,200		)	—			(1,199		)
Cash and cash equivalents at beginning of fiscal period	616			22,200			35,113			—			57,929
Cash and cash equivalents at end of fiscal period	$	641		$	29,984		$	20,951		$	—		$	51,576
Condensed Consolidating Statements of Cash Flows
For the Six Month Period Ended September 30, 2013
(Unaudited)
	Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
				Subsidiaries			Subsidiaries			and Eliminations
Sources (uses) of cash and cash equivalents
Net cash provided by (used in) operating activities	$	(3,747	)	$	(29,147	)	$	1,288		$	—		$	(31,606	)
Investing activities:
Capital expenditures				(9,474		)	(8,863		)	—			(18,337		)
Change in restricted cash				2,874						—			2,874
Net cash used in investing activities	—			(6,600		)	(8,863		)	—			(15,463		)
Financing activities:
Proceeds from revolving line credit	—			9,000			12,000			—			21,000
Deferred acquisition payments	(10,452		)	(1,000		)				—			(11,452		)
Payments of long-term debt	(1,404		)	(18		)				—			(1,422		)
Proceeds from exercise of stock options	57									—			57
Net cash provided by (used in) financing activities	(11,799		)	7,982			12,000			—			8,183
Net increase (decrease) in cash and cash equivalents	(15,546		)	(27,765		)	4,425			—			(38,886		)
Effect of foreign currency fluctuations on cash	—			(475		)	1,083			—			608
Cash and cash equivalents at beginning of fiscal period	17,202			52,056			26,720			—			95,978
Cash and cash equivalents at end of fiscal period	$	1,656		$	23,816		$	32,228		$	—		$	57,700

Basis_of_Financial_Statement_P1

Basis of Financial Statement Presentation (Policies)	6 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Use of Estimates and Assumptions	'
	Use of Estimates and Assumptions
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates, assumptions, and judgments based on historical data and other assumptions that management believes are reasonable.  These estimates and assumptions affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. In addition, they affect the reported amounts of revenues and expenses during the reporting period.
	The Company’s judgments are based on management’s assessment as to the effect certain estimates, assumptions, or future trends or events may have on the financial condition and results of operations reported in the unaudited condensed consolidated financial statements. It is important that readers of these unaudited financial statements understand that actual results could differ from these estimates, assumptions, and judgments.
Recently Issued Accounting Pronouncements	'
	Recently Issued Accounting Pronouncements
	New accounting standards adopted
	In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, Revenue from Contracts with Customers, which supersedes existing accounting standards for revenue recognition and creates a single framework. The new guidance is effective for the Company's fiscal year that begins on April 1, 2017 and interim periods within that fiscal year and requires either a retrospective or a modified retrospective approach to adoption. The Company is currently evaluating the potential impact on its Consolidated Financial Statements and related disclosures, as well as the available transition methods. Early adoption is prohibited.
	There are currently no other accounting standards that have been issued that will have a significant impact on the Company’s financial position, results of operations or cash flows upon adoption.
Restricted Cash	'
	Restricted Cash
	As discussed in Note 3, Debt, the Company received a $24.0 million prepayment from an original equipment manufacturer (“OEM”) and, through September 30, 2014, utilized $13.1 million for the purchase of manufacturing equipment. The remaining proceeds of $10.9 million are classified as restricted cash at September 30, 2014.
	A bank guarantee in the amount of €1.5 million ($1.9 million) was issued by a European bank on behalf of the Company in August 2006 in conjunction with the establishment of a Value-Added Tax (“VAT”) registration in The Netherlands. Accordingly, a deposit was placed with the European bank for €1.7 million ($2.1 million). While the deposit is in KEMET’s name, and KEMET receives all interest earned by this deposit, the deposit is pledged to the European bank, and the bank can use the funds if a valid claim against the bank guarantee is made. The bank guarantee will remain valid until it is discharged by the beneficiary.
Fair Value Measurement	'
	Fair Value Measurement
	The Company utilizes three levels of inputs to measure the fair value of (a) nonfinancial assets and liabilities that are recognized or disclosed at fair value in the Company’s consolidated financial statements on a recurring basis (at least annually) and (b) all financial assets and liabilities. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs.
	The first two inputs are considered observable and the last is considered unobservable. The levels of inputs are as follows:
	•	Level 1—Quoted prices in active markets for identical assets or liabilities.
	•	Level 2—Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.
	•	Level 3—Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.
	Assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and March 31, 2014 are as follows (amounts in thousands):
		Carrying Value September 30,			Fair Value September 30,			Fair Value Measurement Using						Carrying Value March 31,		Fair Value March 31,		Fair Value Measurement Using
		2014			2014			Level 1		Level 2 (2)		Level 3		2014		2014		Level 1		Level 2 (2)		Level 3
	Assets:
	Money markets (1)	$	739		$	739		$	739	$	—	$	—	$	714	$	714	$	714	$	—	$	—
	Total debt	402,082			414,406			372,750		41,656		—		398,589		409,284		371,863		37,421		—
	NEC TOKIN options,	14,300			14,300			—		—		14,300		3,600		3,600		—		—		3,600
	net (3)
	___________________
	-1	Included in the line item “Cash and cash equivalents” on the Condensed Consolidated Balance Sheets.
	-2	The valuation approach used to calculate fair value was a discounted cash flow based on the borrowing rate for each respective debt facility.
	-3	See Note 6, Investment in NEC TOKIN, for a description of the NEC TOKIN options.  The value of the options is interrelated and depends
	on the enterprise value of NEC TOKIN Corporation and its forecasted EBITDA over the duration of the instruments. The options have been valued using option pricing methods in a Monte Carlo simulation.
	The table below summarizes NEC TOKIN option valuation activity using significant unobservable inputs (Level 3) (amounts in thousands):
	31-Mar-14	$	3,600
	Change in value of NEC TOKIN options	10,700
	30-Sep-14	$	14,300
Inventories	'
	Inventories
	Inventories are stated at the lower of cost or market.  The components of inventories are as follows (amounts in thousands):
		30-Sep-14			31-Mar-14
	Raw materials and supplies	$	89,416		$	90,968
	Work in process	58,363			61,310
	Finished goods	62,358			62,522
		210,137			214,800
	Inventory reserves (1)	(21,304		)	(26,826		)
		$	188,833		$	187,974
	___________________
	-1	During the quarter ended June 30, 2013, the Company recorded a $3.9 million reserve for inventory held by a third party. In the quarter ended June 30, 2014, this $3.9 million of inventory and the related reserve was written off.
Warrant	'
	Warrant
	As of September 30, 2014 and March 31, 2014, 8.4 million shares were subject to the warrant held by K Equity, LLC.
Revenue Recognition	'
	Revenue Recognition
	The Company ships products to customers based upon firm orders and revenue is recognized when the sales process is complete. This occurs when products are shipped to the customer in accordance with the terms of an agreement of sale, there is a fixed or determinable selling price, title and risk of loss have been transferred and collectability is reasonably assured. Shipping and handling costs are included in cost of sales.
	A portion of sales is related to products designed to meet customer specific requirements. These products typically have stricter tolerances making them useful to the specific customer requesting the product and to customers with similar or less stringent requirements. The Company recognizes revenue when title to the products transfers to the customer.
	A portion of sales is made to distributors under agreements allowing certain rights of return and price protection on unsold merchandise held by distributors. The Company's distributor policy includes inventory price protection and "ship-from-stock and debit" ("SFSD") programs common in the industry.
	KEMET's SFSD program provides authorized distributors with the flexibility to meet marketplace prices by allowing them, upon a pre-approved case-by-case basis, to adjust their purchased inventory cost to correspond with current market demand. Requests for SFSD adjustments are considered on an individual basis, require a pre-approved cost adjustment quote from their local KEMET sales representative and apply only to a specific customer, part, specified special price amount, specified quantity, and is only valid for a specific period of time. To estimate potential SFSD adjustments corresponding with current period sales, KEMET records a sales reserve based on historical SFSD credits, distributor inventory levels, and certain accounting assumptions, all of which are reviewed quarterly.
	Most of the Company's distributors have the right to return to KEMET a certain portion of the purchased inventory, which, in general, does not exceed 6% of their purchases from the previous fiscal quarter. KEMET estimates future returns based on historical return patterns and records a corresponding allowance on the Condensed Consolidated Balance Sheets. The Company also offers volume based rebates on a case -by-case basis to certain customers in each of the Company's sales' channels.
	The establishment of sales allowances is recognized as a component of the line item "Net sales" on the Condensed Consolidated Statements of Operations, while the associated reserves are included in the line item "Accounts receivable, net" on the Condensed Consolidated Balance Sheets. Estimates used in determining sales allowances are subject to various factors. This includes, but is not limited to, changes in economic conditions, pricing changes, product demand, inventory levels in the supply chain, the effects of technological change, and other variables that might result in changes to the Company's estimates.
	The Company provides a limited warranty to customers that the Company’s products meet certain specifications. The warranty period is generally limited to one year, and the Company’s liability under the warranty is generally limited to a replacement of the product or refund of the purchase price of the product. Warranty costs as a percentage of net sales were approximately 1.0% for the quarters and six month periods ended September 30, 2014 and 2013. The Company recognizes warranty costs when they are both probable and reasonably estimable.

Basis_of_Financial_Statement_P2

Basis of Financial Statement Presentation (Tables)	6 Months Ended
	Sep. 30, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]	'
Schedule of assets and liabilities measured at fair value on a recurring basis	'
	Assets and liabilities measured at fair value on a recurring basis as of September 30, 2014 and March 31, 2014 are as follows (amounts in thousands):
		Carrying Value September 30,			Fair Value September 30,			Fair Value Measurement Using						Carrying Value March 31,		Fair Value March 31,		Fair Value Measurement Using
		2014			2014			Level 1		Level 2 (2)		Level 3		2014		2014		Level 1		Level 2 (2)		Level 3
	Assets:
	Money markets (1)	$	739		$	739		$	739	$	—	$	—	$	714	$	714	$	714	$	—	$	—
	Total debt	402,082			414,406			372,750		41,656		—		398,589		409,284		371,863		37,421		—
	NEC TOKIN options,	14,300			14,300			—		—		14,300		3,600		3,600		—		—		3,600
	net (3)
	___________________
	-1	Included in the line item “Cash and cash equivalents” on the Condensed Consolidated Balance Sheets.
	-2	The valuation approach used to calculate fair value was a discounted cash flow based on the borrowing rate for each respective debt facility.
	-3	See Note 6, Investment in NEC TOKIN, for a description of the NEC TOKIN options.  The value of the options is interrelated and depends
	on the enterprise value of NEC TOKIN Corporation and its forecasted EBITDA over the duration of the instruments. The options have been valued using option pricing methods in a Monte Carlo simulation.
Summary of NEC TOKIN option valuation activity using significant unobservable inputs (Level 3)	'
	The table below summarizes NEC TOKIN option valuation activity using significant unobservable inputs (Level 3) (amounts in thousands):
	31-Mar-14	$	3,600
	Change in value of NEC TOKIN options	10,700
	30-Sep-14	$	14,300
Schedule of components of inventories	'
	Inventories are stated at the lower of cost or market.  The components of inventories are as follows (amounts in thousands):
		30-Sep-14			31-Mar-14
	Raw materials and supplies	$	89,416		$	90,968
	Work in process	58,363			61,310
	Finished goods	62,358			62,522
		210,137			214,800
	Inventory reserves (1)	(21,304		)	(26,826		)
		$	188,833		$	187,974
	___________________
	-1	During the quarter ended June 30, 2013, the Company recorded a $3.9 million reserve for inventory held by a third party. In the quarter ended June 30, 2014, this $3.9 million of inventory and the related reserve was written off.

Discontinued_Operations_Tables

Discontinued Operations (Tables)	6 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Net sales and net operating (loss) from the Company's discontinued operation	'
	Net sales and operating income (loss) from the Company’s discontinued operation for the quarters and six month periods ended September 30, 2014 and 2013 were (amounts in thousands):
		Quarters Ended September 30,					Six Month Periods Ended September 30,
		2014		2013			2014			2013
	Net sales	$	—	$	4,291		$	104		$	4,957
	Operating income (loss)	165		(1,275		)	(266		)	(3,021		)

Debt_Tables

Debt (Tables)	6 Months Ended
	Sep. 30, 2014
Debt Disclosure [Abstract]	'
Summary of Debt	'
	A summary of debt is as follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	10.5% Senior Notes, net of premium of $2,807 and $3,144 as of September 30, 2014 and March 31, 2014, respectively	$	357,807		$	358,144
	Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively	18,486			20,095
	Revolving line of credit	25,249			18,449
	Other	540			1,901
	Total debt	402,082			398,589
	Current maturities	(25,826		)	(7,297		)
	Total long-term debt	$	376,256		$	391,292
Schedule of line item Interest expense on the Condensed Consolidated Statements of Operations	'
	The line item “Interest expense” on the Condensed Consolidated Statements of Operations for the quarters and six month periods ended September 30, 2014 and 2013, consists of the following (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Contractual interest expense	$	9,659		$	8,963		$	19,411		$	17,983
	Amortization of debt issuance costs	426			426			852			852
	Amortization of debt (premium) discount	(78		)	42			(126		)	104
	Imputed interest on acquisition related obligations	235			477			522			1,003
	Interest expense on capital lease	45			—			84			—
	Total interest expense	$	10,287		$	9,908		$	20,743		$	19,942

Restructuring_Charges_Tables

Restructuring Charges (Tables)	6 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Summary of the expenses aggregated on the Condensed Consolidated Statements of Operations line item "Restructuring charges"	'
	A summary of the expenses aggregated in the Condensed Consolidated Statements of Operations line item “Restructuring charges” in the quarters and six month periods ended September 30, 2014 and 2013, is as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Manufacturing relocation costs	$	539		$	548		$	2,223		$	1,023
	Personnel reduction costs	1,148			816			1,294			4,951
	Total restructuring charges	$	1,687		$	1,364		$	3,517		$	5,974
Reconciliation of the beginning and ending liability balances for restructuring charges included in the line items Accrued expenses and Other non-current obligations on the Condensed Consolidated Balance Sheets	'
	A reconciliation of the beginning and ending liability balances for restructuring charges included in the line items “Accrued expenses” and “Other non-current obligations” on the Condensed Consolidated Balance Sheets for the quarters and six month periods ended September 30, 2014 and 2013 are as follows (amounts in thousands):
		Quarter Ended September 30, 2014						Quarter Ended September 30, 2013
		Personnel			Manufacturing			Personnel			Manufacturing
		Reductions			Relocations			Reductions			Relocations
	Beginning of period	$	3,384		$	—		$	8,947		$	—
	Costs charged to expense	1,148			539			816			548
	Costs paid or settled	(1,264		)	(539		)	(4,648		)	(548		)
	Change in foreign exchange	(241		)	—			155			—
	End of period	$	3,027		$	—		$	5,270		$	—
		Six Month Period Ended September 30, 2014						Six Month Period Ended September 30, 2013
		Personnel			Manufacturing			Personnel			Manufacturing
		Reductions			Relocations			Reductions			Relocations
	Beginning of period	$	6,217		$	—		$	13,509		$	567
	Costs charged to expense	$	1,294		$	2,223		$	4,951		$	1,023
	Costs paid or settled	$	(4,187	)	$	(2,223	)	$	(13,517	)	$	(1,590	)
	Change in foreign exchange	$	(297	)	$	—		$	327		$	—
	End of period	$	3,027		$	—		$	5,270		$	—

Comprehensive_Income_Loss_and_1

Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Sep. 30, 2014
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract]	'
Schedule of changes in Accumulated Other Comprehensive Income (Loss)	'
	Changes in Accumulated Other Comprehensive Income (Loss) ("AOCI") for the quarters ended September 30, 2014 and 2013 include the following components (amounts in thousands):
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at June 30, 2014	$	22,235		$	(7,326	)	$	1,412		$	1,262		$	17,583
	Other comprehensive income (loss) before reclassifications	(13,659		)	—			—			2,982			(10,677		)
	Amounts reclassified out of AOCI	—			81			(52		)	—			29
	Other comprehensive income (loss)	(13,659		)	81			(52		)	2,982			(10,648		)
	Balance at September 30, 2014	$	8,576		$	(7,245	)	$	1,360		$	4,244		$	6,935
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at June 30, 2013	$	15,810		$	(7,487	)	$	1,748		$	(651	)	$	9,420
	Other comprehensive income (loss) before reclassifications	6,359			—			—			(524		)	5,835
	Amounts reclassified out of AOCI	—			121			(61		)	—			60
	Other comprehensive income (loss)	6,359			121			(61		)	(524		)	5,895
	Balance at September 30, 2013	22,169			$	(7,366	)	$	1,687		$	(1,175	)	$	15,315
	Changes in Accumulated Other Comprehensive Income (Loss) for the six month periods ended September 30, 2014 and 2013 include the following components (amounts in thousands):
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at March 31, 2014	$	23,335		$	(7,386	)	$	1,464		$	771		$	18,184
	Other comprehensive income (loss) before reclassifications	(14,759		)	—			—			3,473			(11,286		)
	Amounts reclassified out of AOCI	—			141			(104		)	—			37
	Other comprehensive income (loss)	(14,759		)	141			(104		)	3,473			(11,249		)
	Balance at September 30, 2014	$	8,576		$	(7,245	)	$	1,360		$	4,244		$	6,935
		Foreign Currency			Defined Benefit			Post-Retirement			Ownership Share of			Net Accumulated
		Translation (1)			Pension Plans,			Benefit Plans			Equity Method			Other
					Net of Tax (2)						Investees’ Other			Comprehensive
											Comprehensive			Income
											Income (Loss)
	Balance at March 31, 2013	$	13,538		$	(7,662	)	$	1,818		—			$	7,694
	Other comprehensive income (loss) before reclassifications	8,631			—			—			(1,175		)	7,456
	Amounts reclassified out of AOCI	—			296			(131		)	—			165
	Other comprehensive income (loss)	8,631			296			(131		)	(1,175		)	7,621
	Balance at September 30, 2013	$	22,169		$	(7,366	)	$	1,687		$	(1,175	)	$	15,315
	-1	Due primarily to the Company’s permanent re-investment assertion relating to foreign earnings, there were no significant deferred tax effects associated with the cumulative currency translation gains and losses during the quarters and six month periods ended September 30, 2014 and 2013.
	-2	Ending balance is net of tax of $2.2 million and $2.3 million as of September 30, 2014 and September 30, 2013, respectively.

Investment_in_NEC_TOKIN_Equity

Investment in NEC TOKIN Equity Investment in NEC Tokin (Tables)	6 Months Ended
	Sep. 30, 2014
Schedule of Equity Method Investments [Line Items]	'
Summarized financial information for NEC TOKIN	'
	Summarized financial information for NEC TOKIN follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	Current assets	$	232,991		$	245,709
	Non-current assets	292,440			302,161
	Current liabilities	123,962			120,929
	Non-current liabilities	325,877			360,908
		Three Months Ended						Six Month Periods Ended September 30,
		September 30,
		2014			2013			2014			2013
	Sales	$	129,677		$	135,074		$	252,085		$	258,266
	Gross profit	26,387			25,569			53,065			43,869
	Net income (loss)	2,454			(3,213		)	(700		)	(11,942		)
Reconciliation between NEC TOKIN's net loss and KEMET's equity investment loss	'
	A reconciliation between NEC TOKIN's net loss and KEMET's equity investment loss follows (amounts in thousands):
		Three Months Ended						Six Month Periods Ended September 30,
		September 30,
		2014			2013			2014			2013
	NEC TOKIN net income (loss)	2,454			(3,213		)	(700		)	(11,942		)
	KEMET's equity ownership %	34		%	34		%	34		%	34		%
	Equity income (loss) from NEC TOKIN before Adjustments	834			(1,092		)	(238		)	(4,060		)
	Adjustments:
	Amortization and depreciation	(602		)	(405		)	(1,205		)	(814		)
	Inventory valuation	—			254			—			254
	Equity income (loss) from NEC TOKIN	$	232		$	(1,243	)	$	(1,443	)	$	(4,620	)
	A reconciliation between NEC TOKIN's net assets and KEMET's investment in NEC TOKIN balance follows (amounts in thousands):
		September 30,			March 31,
		2014			2014
	Investment in NEC TOKIN	$	48,449		$	46,419
	Purchase price accounting basis adjustment:
	Property, plant and equipment	7,116			7,325
	Technology	(15,450		)	(16,261		)
	Long-term debt	(4,254		)	(4,754		)
	Goodwill	(9,326		)	(9,326		)
	Other	(834		)	(952		)
	KEMET's 34% economic interest of NEC TOKIN's net assets	$	25,701		$	22,451

Segment_and_Geographic_Informa1

Segment and Geographic Information (Tables)	6 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Schedule of business group's net sales, operating income (loss), depreciation and amortization expenses and sales by region	'
	The following table reflects each business group’s net sales, operating income (loss), depreciation and amortization expenses and sales by region for the quarters and six month periods ended September 30, 2014 and 2013 (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Net sales:
	Solid Capacitors	$	163,019		$	157,714		$	322,809		$	307,115
	Film and Electrolytic	52,274			50,735			105,365			103,391
		$	215,293		$	208,449		$	428,174		$	410,506
	Operating income (loss) (1):
	Solid Capacitors	$	38,386		$	25,386		$	68,120		$	38,178
	Film and Electrolytic	(917		)	(2,211		)	(6,993		)	(8,513		)
	Unallocated operating expenses	(24,699		)	(21,590		)	(48,963		)	(46,292		)
		$	12,770		$	1,585		$	12,164		$	(16,627	)
	Depreciation and amortization expense:
	Solid Capacitors	$	5,463		$	7,302		$	10,941		$	14,612
	Film and Electrolytic	3,201			3,183			7,018			7,598
	Corporate	1,513			1,466			3,015			3,380
		$	10,177		$	11,951		$	20,974		$	25,590
	___________________
	-1	Restructuring charges included in Operating income (loss) are as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Restructuring charges:
	Solid Capacitors	$	169		$	99		$	1,399		$	3,145
	Film and Electrolytic	1,500			1,062			1,989			2,472
	Corporate	18			203			129			357
		$	1,687		$	1,364		$	3,517		$	5,974
	___________________
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Sales by region:
	North and South America (“Americas”)	$	72,167		$	65,398		$	138,150		$	124,751
	Europe, Middle East, Africa (“EMEA”)	69,930			68,166			147,135			141,157
	Asia and Pacific Rim (“APAC”)	73,196			74,885			142,889			144,598
		$	215,293		$	208,449		$	428,174		$	410,506
	The following table reflects each business group’s total assets as of September 30, 2014 and March 31, 2014 (amounts in thousands):
		30-Sep-14			31-Mar-14
	Total assets:
	Solid Capacitors	$	475,009		$	479,377
	Film and Electrolytic	254,396			287,861
	Corporate	87,822			76,429
		$	817,227		$	843,667

Defined_Benefit_Pension_and_Ot

Defined Benefit Pension and Other Postretirement Benefit Plans (Tables)	6 Months Ended
	Sep. 30, 2014
Compensation and Retirement Disclosure [Abstract]	'
Schedule of components of net periodic benefit (income) costs relating to pension and other postretirement benefit plans	'
	The components of net periodic benefit (income) costs relating to the Company’s pension and other postretirement benefit plans are as follows for the quarters ended September 30, 2014 and 2013 (amounts in thousands):
		Pension						Post-retirement Benefit Plan
		Quarters Ended September 30,						Quarters Ended September 30,
		2014			2013			2014			2013
	Net service cost	$	338		$	332		$	—		$	—
	Interest cost	478			428			6			7
	Expected return on net assets	(124		)	(110		)	—			—
	Amortization:
	Actuarial (gain) loss	76			79			(52		)	(61		)
	Prior service cost	5			1			—			—
	Total net periodic benefit (income) costs	$	773		$	730		$	(46	)	$	(54	)
	The components of net periodic benefit costs relating to the Company’s pension and other postretirement benefit plans are as follows for the six month periods ended September 30, 2014 and 2013 (amounts in thousands):
		Pension						Postretirement Benefit Plans
		Six Month Periods Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014			2013
	Net service cost	$	676		$	663		$	—		$	—
	Interest cost	957			856			12			12
	Expected return on net assets	(247		)	(219		)	—			—
	Amortization:
	Actuarial (gain) loss	132			157			(104		)	(131		)
	Prior service cost	9			2			—			—
	Net curtailment and settlement gain on benefit plans	—			—			—			—
	Total net periodic benefit (income) costs	$	1,527		$	1,459		$	(92	)	$	(119	)

Stockbased_Compensation_Tables

Stock-based Compensation (Tables)	6 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Schedule of the compensation expense (recovery) associated with stock-based compensation	'
	The compensation expense associated with stock-based compensation for the quarters ended September 30, 2014 and 2013 is recorded on the Condensed Consolidated Statements of Operations as follows (amounts in thousands):
		Quarter Ended September 30, 2014						Quarter Ended September 30, 2013
		Stock		Restricted		LTIPs		Stock		Restricted			LTIPs
		Options		Stock				Options		Stock
	Cost of sales	$	61	$	21	$	276	$	135	$	(31	)	$	124
	Selling, general and administrative expenses	86		66		344		137		72			169
	Research and development	5		—		99		9		—			44
	Total	$	152	$	87	$	719	$	281	$	41		$	337
	The compensation expense associated with stock-based compensation for the six month periods ended September 30, 2014 and 2013 is recorded on the Condensed Consolidated Statements of Operations as follows (amounts in thousands):
		Six Month Period Ended September 30, 2014						Six Month Period Ended September 30, 2013
		Stock		Restricted		LTIPs		Stock		Restricted			LTIPs
		Options		Stock				Options		Stock
	Cost of sales	$	169	$	44	$	492	$	273	$	32		$	238
	Selling, general and administrative expenses	201		244		632		284		305			383
	Research and development	9		—		161		20		—			93
	Total	$	379	$	288	$	1,285	$	577	$	337		$	714

Basic_and_Diluted_Net_Loss_Per1

Basic and Diluted Net Loss Per Common Share (Tables)	6 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Schedule of basic EPS and diluted EPS	'
	The following table presents basic EPS and diluted EPS (amounts in thousands, except per share data):
		Quarters Ended September 30,							Quarters Ended Six Month Periods Ended September 30,
		2014				2013			2014			2013
	Numerator:
	Income (loss) from continuing operations	$	7,730			$	(11,945	)	$	(2,753	)	$	(45,575	)
	Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	(1,400		)		(1,151		)	5,543			(2,661		)
	Net income (loss)	$	6,330			$	(13,096	)	$	2,790		$	(48,236	)
	Denominator:
	Weighted-average shares outstanding:
	Basic	45,400				45,092			45,337			45,057
	Assumed conversion of employee stock grants	430				—			463			—
	Assumed conversion of warrants	6,691				—			6,762			—
	Diluted	52,521				45,092			52,562			45,057
	Net income (loss) per basic share:
	Income (loss) from continuing operations	$	0.17			$	(0.26	)	$	(0.06	)	$	(1.01	)
	Income (loss) from discontinued operations	$	(0.03	)		$	(0.03	)	$	0.12		$	(0.06	)
	Net income (loss)	$	0.14			$	(0.29	)	$	0.06		$	(1.07	)
	Net income (loss) per diluted share:
	Income (loss) from continuing operations	$	0.15			$	(0.26	)	$	(0.05	)	$	(1.01	)
	Income (loss) from discontinued operations	$	(0.03	)		$	(0.03	)	$	0.11		$	(0.06	)
	Net income (loss)	$	0.12			$	(0.29	)	$	0.06		$	(1.07	)
Schedule of common stock equivalents that could potentially dilute net income (loss) per basic share in the future, but were not included in the computation of diluted earnings per share because the impact would have been antidilutive	'
	Common stock equivalents that could potentially dilute net income (loss) per basic share in the future, but were not included in the computation of diluted earnings per share because the impact would have been anti-dilutive, are as follows (amounts in thousands):
		Quarters Ended September 30,						Six Month Periods Ended September 30,
		2014			2013			2014		2013
	Assumed conversion of employee stock grants	1,001			2,234			1,030		1,941
	Assumed conversion of warrants	—			6,371			—		6,540

Condensed_Consolidating_Financ1

Condensed Consolidating Financial Statements (Tables)	6 Months Ended
	Sep. 30, 2014																Sep. 30, 2013
Condensed Financial Information of Parent Company Only Disclosure [Abstract]	'																'
Condensed Consolidating Balance Sheet	'																'
	Condensed Consolidating Balance Sheet
	September 30, 2014
	(Unaudited)
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	ASSETS
	Current assets:
	Cash and cash equivalents	$	641		$	29,984		$	20,951		$	—		$	51,576
	Accounts receivable, net	—			41,010			54,571			—			95,581
	Intercompany receivable	320,305			348,367			217,971			(886,643		)	—
	Inventories, net	—			127,232			61,601			—			188,833
	Prepaid expenses and other	3,145			16,610			23,415			(2,941		)	40,229
	Deferred income taxes	—			1,957			4,612			—			6,569
	Total current assets	324,091			565,160			383,121			(889,584		)	382,788
	Property and equipment, net	316			101,498			173,684			—			275,498
	Goodwill	—			35,584			—			—			35,584
	Intangible assets, net	—			27,688			7,689			—			35,377
	Investment in NEC TOKIN	—			48,449			—			—			48,449
	Investments in subsidiaries	421,754			424,312			30,285			(876,351		)	—
	Restricted cash	—			12,955			—			—			12,955
	Deferred income taxes	—			969			5,454			—			6,423
	Other assets	4,750			14,486			917			—			20,153
	Long-term intercompany receivable	74,603			58,634			2,800			(136,037		)	—
	Total assets	$	825,514		$	1,289,735		$	603,950		$	(1,901,972	)	$	817,227
	LIABILITIES AND STOCKHOLDERS’ EQUITY
	Current liabilities:
	Current portion of long-term debt	$	18,486		$	6,800		$	540		$	—		$	25,826
	Accounts payable	93			35,621			36,915			—			72,629
	Intercompany payable	208,989			590,222			87,432			(886,643		)	—
	Accrued expenses	25,301			12,692			28,407			—			66,400
	Income taxes payable and deferred income taxes	—			2,923			363			(2,941		)	345
	Total current liabilities	252,869			648,258			153,657			(889,584		)	165,200
	Long-term debt, less current portion	357,807			6,449			12,000			—			376,256
	Other non-current obligations	—			3,626			48,620			—			52,246
	Deferred income taxes	—			4,191			4,496			—			8,687
	Long-term intercompany payable	—			74,603			61,434			(136,037		)	—
	Stockholders’ equity	214,838			552,608			323,743			(876,351		)	214,838
	Total liabilities and stockholders’ equity	$	825,514		$	1,289,735		$	603,950		$	(1,901,972	)	$	817,227
	Condensed Consolidating Balance Sheet (1)
	March 31, 2014
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	ASSETS
	Current assets:
	Cash and cash equivalents	$	616		$	22,200		$	35,113		$	—		$	57,929
	Accounts receivable, net	—			49,462			49,485			—			98,947
	Intercompany receivable	318,582			329,211			203,018			(850,811		)	—
	Inventories, net	—			119,340			68,634			—			187,974
	Prepaid expenses and other	3,146			15,286			21,380			(2,941		)	36,871
	Deferred income taxes	—			1,022			5,673			—			6,695
	Current assets of discontinued operations	—			—			12,160			—			12,160
	Total current assets	322,344			536,521			395,463			(853,752		)	400,576
	Property and equipment, net	329			104,874			187,445			—			292,648
	Goodwill	—			35,584			—			—			35,584
	Intangible assets, net	—			28,380			8,804			—			37,184
	Investment in NEC TOKIN	—			46,419			—			—			46,419
	Investments in subsidiaries	402,090			424,386			30,285			(856,761		)	—
	Restricted cash	—			13,512			—			—			13,512
	Deferred income taxes	—			1,010			5,768			—			6,778
	Other assets	5,415			3,895			820			—			10,130
	Non-current assets of discontinued operations	—			—			836			—			836
	Long-term intercompany receivable	81,746			60,663			2,801			(145,210		)	—
	Total assets	$	811,924		$	1,255,244		$	632,222		$	(1,855,723	)	$	843,667
LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities:
Current portion of long-term debt	$	5,988		$	—		$	1,309		$	—		$	7,297
Accounts payable	84			36,579			38,155			—			74,818
Intercompany payable	176,624			570,535			103,652			(850,811		)	—
Accrued expenses	34,236			13,698			28,534			—			76,468
Income taxes payable and deferred income taxes	—			2,909			1,012			(2,941		)	980
Current liabilities of discontinued operations	—			—			7,269			—			7,269
Total current liabilities	216,932			623,721			179,931			(853,752		)	166,832
Long-term debt, less current portion	372,251			6,449			12,592			—			391,292
Other non-current obligations	857			3,311			51,696			—			55,864
Deferred income taxes	—			3,258			1,945			—			5,203
Non-current liabilities of discontinued operations	—			—			2,592			—			2,592
Long-term intercompany payable	—			81,747			63,463			(145,210		)	—
Stockholders’ equity	221,884			536,758			320,003			(856,761		)	221,884
Total liabilities and stockholders’ equity	$	811,924		$	1,255,244		$	632,222		$	(1,855,723	)	$	843,667
(1) Derived from audited financial statements.
Condensed Consolidating Statement of Operations	'																'
	Condensed Consolidating Statement of Operations
	For the Quarter Ended September 30, 2013
	(Unaudited)
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	Net sales	$	67		$	245,786		$	208,798		$	(246,202	)	$	208,449
	Operating costs and expenses:
	Cost of sales	299			222,882			184,945			(230,594		)	177,532
	Selling, general and administrative expenses	9,944			16,075			11,904			(15,608		)	22,315
	Research and development	54			3,791			1,766			—			5,611
	Restructuring charges	—			446			918			—			1,364
	Net (gain) loss on sales and disposals of assets	—			18			24			—			42
	Total operating costs and expenses	10,297			243,212			199,557			(246,202		)	206,864
	Operating income (loss)	(10,230		)	2,574			9,241			—			1,585
	Non-operating (income) expense:
	Interest income	(3		)	—			(8		)	—			(11		)
	Interest expense	10,065			226			(383		)	—			9,908
	Other (income) expense, net	(9,915		)	9,639			1,222			—			946
	Equity in earnings of subsidiaries	2,703			—			—			(2,703		)	—
	Income (loss) from continuing operations before income taxes	(13,080		)	(7,291		)	8,410			2,703			(9,258		)
	Income tax expense	—			33			1,411			—			1,444
	Income (loss) from continuing operations before equity loss from NEC TOKIN	(13,080		)	(7,324		)	6,999			2,703			(10,702		)
	Equity income (loss) from NEC TOKIN	—			(1,243		)	—			—			(1,243		)
	Income (loss) from continuing operations	(13,080		)	(8,567		)	6,999			2,703			(11,945		)
	Income (loss) from discontinued operations	(16		)	(250		)	(885		)	—			(1,151		)
	Net income (loss)	$	(13,096	)	$	(8,817	)	$	6,114		$	2,703		$	(13,096	)
	Condensed Consolidating Statement of Operations
	For the Quarter Ended September 30, 2014
	(Unaudited)
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated
					Subsidiaries			Subsidiaries			and Eliminations
	Net sales	$	57		$	250,019		$	198,983		$	(233,766	)	$	215,293
	Operating costs and expenses:
	Cost of sales	561			211,328			175,839			(218,190		)	169,538
	Selling, general and administrative expenses	13,056			15,071			12,959			(15,576		)	25,510
	Research and development	140			4,247			1,951			—			6,338
	Restructuring charges	—			192			1,495			—			1,687
	Net (gain) loss on sales and disposals of assets	(9		)	43			(584		)	—			(550		)
	Total operating costs and expenses	13,748			230,881			191,660			(233,766		)	202,523
	Operating income (loss)	(13,691		)	19,138			7,323			—			12,770
	Interest income	—			—			(3		)				(3		)
	Interest expense	9,726			263			298						10,287
	Other (income) expense, net	(12,975		)	9,355			(3,975		)	—			(7,595		)
	Equity in earnings of subsidiaries	(16,772		)	—			—			16,772			—
	Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	6,330			9,520			11,003			(16,772		)	10,081
	Income tax expense	—			210			2,373			—			2,583
	Income (loss) from continuing operations before equity income from NEC TOKIN	6,330			9,310			8,630			(16,772		)	7,498
	Equity income (loss) from NEC TOKIN	—			232			—			—			232
	Income (loss) from continuing operations	6,330			9,542			8,630			(16,772		)	7,730
	Income (loss) from discontinued operations	—			593			(1,993		)	—			(1,400		)
	Net income (loss)	$	6,330		$	10,135		$	6,637		$	(16,772	)	$	6,330
Condensed Consolidating Statements of Comprehensive Income (loss)	'																'
	Condensed Consolidating Statements of Comprehensive Income (Loss)
	For the Quarter Ended September 30, 2013
	(Unaudited)
	Comprehensive income (loss)	$	(10,576	)	$	(9,936	)	$	10,608		$	2,703		$	(7,201	)
	Condensed Consolidating Statements of Comprehensive Income (Loss)
	Quarter Ended September 30, 2014
	(Unaudited)
	Comprehensive income (loss)	$	(44	)	$	14,431		$	(1,933	)	$	(16,772	)	$	(4,318	)
Condensed Consolidating Statement of Cash Flows	'																'
	Condensed																Condensed Consolidating Statements of Cash Flows
	Consolidating Statement of Cash Flows																For the Six Month Period Ended September 30, 2013
	For the Six Month Period Ended September 30, 2014																(Unaudited)
	(Unaudited)
		Parent			Guarantor			Non-Guarantor			Reclassifications			Consolidated				Parent			Guarantor			Non-Guarantor			Reclassifications		Consolidated
					Subsidiaries			Subsidiaries			and Eliminations										Subsidiaries			Subsidiaries			and Eliminations
	Sources (uses) of cash and cash equivalents																Sources (uses) of cash and cash equivalents
	Net cash provided by (used in) operating activities	$	12,417		$	4,666		$	(15,489	)	$	—		$	1,594		Net cash provided by (used in) operating activities	$	(3,747	)	$	(29,147	)	$	1,288		$	—	$	(31,606	)
	Investing activities:																Investing activities:
	Capital expenditures	—			(5,514		)	(6,461		)	—			(11,975		)	Capital expenditures				(9,474		)	(8,863		)	—		(18,337		)
	Change in restricted cash	—			558			—			—			558			Change in restricted cash				2,874						—		2,874
	Proceeds from sale of assets	—			2,273			178			—			2,451			Net cash used in investing activities	—			(6,600		)	(8,863		)	—		(15,463		)
	Proceeds from sale of discontinued operations	—			—			10,125			—			10,125			Financing activities:
	Net cash used in investing activities	—			(2,683		)	3,842			—			1,159			Proceeds from revolving line credit	—			9,000			12,000			—		21,000
	Financing activities:																Deferred acquisition payments	(10,452		)	(1,000		)				—		(11,452		)
	Proceeds from revolving line credit	—			14,300			—			—			14,300			Payments of long-term debt	(1,404		)	(18		)				—		(1,422		)
	Payments of revolving line credit	—			(7,500		)	—			—			(7,500		)	Proceeds from exercise of stock options	57									—		57
	Deferred acquisition payments	(10,597		)	(1,000		)	—			—			(11,597		)	Net cash provided by (used in) financing activities	(11,799		)	7,982			12,000			—		8,183
	Payments of long-term debt	(1,820		)	—			(1,315		)	—			(3,135		)	Net increase (decrease) in cash and cash equivalents	(15,546		)	(27,765		)	4,425			—		(38,886		)
	Proceeds from exercise of stock options	25			—			—			—			25			Effect of foreign currency fluctuations on cash	—			(475		)	1,083			—		608
	Net cash provided by (used in) financing activities	(12,392		)	5,800			(1,315		)	—			(7,907		)	Cash and cash equivalents at beginning of fiscal period	17,202			52,056			26,720			—		95,978
	Net increase (decrease) in cash and cash equivalents	25			7,783			(12,962		)	—			(5,154		)	Cash and cash equivalents at end of fiscal period	$	1,656		$	23,816		$	32,228		$	—	$	57,700
	Effect of foreign currency fluctuations on cash	—			1			(1,200		)	—			(1,199		)
	Cash and cash equivalents at beginning of fiscal period	616			22,200			35,113			—			57,929
	Cash and cash equivalents at end of fiscal period	$	641		$	29,984		$	20,951		$	—		$	51,576

Basis_of_Financial_Statement_P3

Basis of Financial Statement Presentation (Details)

3 Months Ended

6 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2014

Jun. 30, 2014

Sep. 30, 2013

Jun. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Aug. 28, 2012

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

USD ($)

EUR (€)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Carrying Value

Carrying Value

Recurring

Recurring

Recurring

Recurring

Recurring

Recurring

Recurring

Recurring

Recurring

Interest-bearing deposits

Interest-bearing deposits

USD ($)

USD ($)

USD ($)

Fair Value

Fair Value

Level 1

Level 1

Level 2

Level 2

Level 3

Level 3

USD ($)

EUR (€)

USD ($)

USD ($)

Fair Value

Fair Value

Fair Value

Fair Value

Fair Value

Fair Value

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Restricted Cash

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepayment received from an OEM

'

'

'

'

'

'

'

'

$24,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Amount of prepayment utilized for purchase of manufacturing equipment

'

'

'

'

'

13,100,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Prepayment received from an OEM classified as restricted cash

10,900,000

'

'

'

'

10,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Guarantee issued by the European bank in conjunction with the establishment of a VAT registration in The Netherlands

1,900,000

1,500,000

'

'

'

1,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Fair Value Measurement

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Money markets

'

'

'

'

'

'

'

'

'

739,000

714,000

'

739,000

714,000

739,000

714,000

'

'

'

'

'

'

Total debt

'

'

'

'

'

'

'

'

'

402,082,000

398,589,000

'

414,406,000

409,284,000

372,750,000

371,863,000

41,656,000

37,421,000

'

'

'

'

NEC TOKIN options, net

'

'

'

'

'

'

'

'

'

14,300,000

3,600,000

'

14,300,000

3,600,000

'

'

'

'

14,300,000

3,600,000

'

'

NEC TOKIN option valuation activity using significant unobservable inputs (Level 3)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Balance at the beginning of the period

'

'

'

'

'

'

'

'

'

'

'

3,600,000

'

'

'

'

'

'

'

'

'

'

Change in value of NEC TOKIN options

'

'

'

'

'

10,700,000

-382,000

'

'

'

'

10,700,000

'

'

'

'

'

'

'

'

'

'

Balance at the end of the period

'

'

'

'

'

'

'

'

'

'

'

14,300,000

'

'

'

'

'

'

'

'

'

'

Restricted cash

12,955,000

'

'

'

'

12,955,000

'

13,512,000

'

'

'

'

'

'

'

'

'

'

'

'

2,100,000

1,700,000

Components of inventories

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Raw materials and supplies

89,416,000

'

'

'

'

89,416,000

'

90,968,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Work in process

58,363,000

'

'

'

'

58,363,000

'

61,310,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Finished goods

62,358,000

'

'

'

'

62,358,000

'

62,522,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventory, gross

210,137,000

'

'

'

'

210,137,000

'

214,800,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventory reserves

-21,304,000

'

'

'

'

-21,304,000

'

-26,826,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Inventories, net

188,833,000

'

'

'

'

188,833,000

'

187,974,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Reserve for inventory held by a third party

'

'

$3,900,000

'

$3,900,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warrant

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of shares subject to a warrant held by K Equity, LLC

8,400,000

8,400,000

'

'

'

8,400,000

'

8,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revenue Recognition

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period of product warranty

'

'

'

'

'

'1 year

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Warranty costs as a percentage of net sales, maximum

1.00%

1.00%

'

1.00%

'

1.00%

1.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Discontinued_Operations_Detail

Discontinued Operations (Details) (USD $)	3 Months Ended			6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'	'	'	'
Gain on sale of discontinued operations, net of tax	'	'	'	$5,809	$0
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	-1,400	'	-1,151	5,543	-2,661
Machinery Division	'	'	'	'	'
Net sales and net operating (loss) from discontinued operations	'	'	'	'	'
Net sales	0	'	4,291	104	4,957
Operating income (loss)	'	$165	($1,275)	($266)	($3,021)

Debt_Details

Debt (Details)

3 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

6 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Mar. 31, 2014

Aug. 28, 2012

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Oct. 08, 2012

Aug. 28, 2012

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Mar. 31, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

10.5% Senior Notes, net of premium of $2,807 and $3,144 as of September 30, 2014 and March 31, 2014, respectively

10.5% Senior Notes, net of premium of $2,807 and $3,144 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Advanced payment from OEM, net of discount of $111 and $323 as of September 30, 2014 and March 31, 2014, respectively

Revolving Line of Credit

Revolving Line of Credit

Letters of Credit One

Letters of Credit Two

Letters of Credit Two

Letter of Credit Three

Letter of Credit Three

US Facility

US Facility

Singapore Facility

Singapore Facility

Other

Other

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

USD ($)

Minimum

Maximum

USD ($)

USD ($)

USD ($)

USD ($)

EUR (€)

USD ($)

EUR (€)

USD ($)

Base Rate

USD ($)

LIBOR

USD ($)

USD ($)

USD ($)

USD ($)

letters_of_credit

Debt

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Long-term debt outstanding

'

'

'

'

'

'

$355,000,000

$355,000,000

$18,600,000

$20,400,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Revolving line of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

25,249,000

18,449,000

'

'

'

'

'

13,200,000

'

12,000,000

'

'

'

Total debt

402,082,000

'

402,082,000

'

398,589,000

'

357,807,000

358,144,000

18,486,000

20,095,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

540,000

1,901,000

Current maturities

-25,826,000

'

-25,826,000

'

-7,297,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total long-term debt

376,256,000

'

376,256,000

'

391,292,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Contractual interest expense

9,659,000

8,963,000

19,411,000

17,983,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of debt issuance costs

426,000

426,000

852,000

852,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Amortization of debt (premium) discount

-78,000

42,000

-126,000

104,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Imputed interest on acquisition related obligations

235,000

477,000

522,000

1,003,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest expense on capital lease

45,000

0

84,000

0

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Total interest expense

10,287,000

9,908,000

20,743,000

19,942,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Maximum borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

'

'

'

'

'

Stated interest rate (as a percent)

'

'

'

'

'

'

10.50%

10.50%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

5.25%

'

3.50%

'

'

Spread on variable rate basis (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2.25%

'

3.25%

'

'

Term on borrowing

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'31 days

'

'

'

'

'

'

'

'

'

'

'

'

Amount borrowed

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,300,000

'

'

'

'

'

'

'

'

'

'

Repayments of lines of credit

'

'

7,500,000

0

'

'

'

'

'

'

'

'

'

'

'

'

7,500,000

'

'

'

'

'

'

'

'

'

'

Remaining borrowing capacity

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

300,000

'

'

'

'

'

'

'

'

'

'

Amount of irrevocable standby letter of credit delivered

'

'

'

'

'

'

'

'

'

'

16,000,000

'

'

'

'

'

16,000,000

1,400,000

1,100,000

900,000

700,000

'

'

'

'

'

'

Number of letters of credit

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

2

'

'

'

'

'

'

'

'

'

'

'

Amount agreed to be advanced

'

'

'

'

'

24,000,000

'

'

'

'

'

24,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Monthly repayment of advanced amount, price ratio below threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

1,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Monthly repayment of advanced amount, price ratio above threshold

'

'

'

'

'

'

'

'

'

'

'

'

'

2,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

Threshold price ratio (as a percent)

'

'

'

'

'

'

'

'

110.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Cash balance to be maintained on last day of any fiscal quarter

'

'

'

'

'

'

'

'

'

'

'

'

60,000,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Percentage of consolidated total assets accounted by subsidiary which applies for bankruptcy or other similar proceedings

'

'

'

'

'

'

'

'

'

'

'

'

20.00%

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Period within which any proceeding filed against the entity is to be dismissed

'

'

'

'

'

'

'

'

'

'

'

'

'

'60 days

'

'

'

'

'

'

'

'

'

'

'

'

'

Interest payable

'

'

'

'

'

'

15,500,000

15,500,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, unamortized premium

'

'

'

'

'

'

2,807,000

3,144,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Debt instrument, unamortized discount

'

'

'

'

'

'

'

'

$111,000

$323,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Restructuring_Charges_Details

Restructuring Charges (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Restructuring Charges	'	'	'	'
Restructuring charges	$1,687,000	$1,364,000	$3,517,000	$5,974,000
Other restructuring costs	'	500,000	300,000	1,100,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	1,687,000	1,364,000	3,517,000	5,974,000
Solid Capacitors	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	169,000	99,000	1,399,000	3,145,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	169,000	99,000	1,399,000	3,145,000
Manufacturing relocation costs	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	539,000	548,000	2,223,000	1,023,000
Reconciliation of restructuring liability	'	'	'	'
Beginning of period	0	0	0	567,000
Costs charged to expense	539,000	548,000	2,223,000	1,023,000
Costs paid or settled	-539,000	-548,000	-2,223,000	-1,590,000
Change in foreign exchange	0	0	0	0
End of period	0	0	0	0
Manufacturing relocation costs | Landsberg Germany	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	539,000	'	700,000	'
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	539,000	'	700,000	'
Manufacturing relocation costs | Italy and Evora Portugal	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	500,000	'	1,023,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	500,000	'	1,023,000
Manufacturing relocation costs | Evora Portugal	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	'	1,300,000	'
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	'	1,300,000	'
Personnel reduction costs	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	1,148,000	816,000	1,294,000	4,951,000
Reconciliation of restructuring liability	'	'	'	'
Beginning of period	3,384,000	8,947,000	6,217,000	13,509,000
Costs charged to expense	1,148,000	816,000	1,294,000	4,951,000
Costs paid or settled	-1,264,000	-4,648,000	-4,187,000	-13,517,000
Change in foreign exchange	-241,000	155,000	-297,000	327,000
End of period	3,027,000	5,270,000	3,027,000	5,270,000
Personnel reduction costs | Innovation center	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	'	'	1,900,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	'	'	1,900,000
Personnel reduction costs | Europe	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	1,148,000	'	1,000,000	'
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	1,148,000	'	1,000,000	'
Personnel reduction costs | Weymouth United Kingdom	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	300,000	'	400,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	300,000	'	400,000
Personnel reduction costs | Mexican operations | Solid Capacitors	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	'	'	1,200,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	'	'	1,200,000
Personnel reduction costs | Italy | Cassia Integrazione Guadagni Straordinaria (CIGS) plan	'	'	'	'
Restructuring Charges	'	'	'	'
Restructuring charges	'	'	'	400,000
Reconciliation of restructuring liability	'	'	'	'
Costs charged to expense	'	'	'	$400,000
Personnel reduction costs | Italy | Cassia Integrazione Guadagni Straordinaria (CIGS) plan | Maximum	'	'	'	'
Restructuring Charges	'	'	'	'
Number of employees covered under CIGS plan	'	'	'	170
Term of CIGS plan	'	'	'	'12 months

Comprehensive_Income_Loss_and_2

Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Changes in accumulated other comprehensive income (loss)	'	'	'	'
Balance at the beginning of the period	$17,583,000	$9,420,000	$18,184,000	$7,694,000
Other comprehensive income (loss) before reclassifications	-10,677,000	5,835,000	-11,286,000	7,456,000
Amounts reclassified out of AOCI	29,000	60,000	37,000	165,000
Other comprehensive income (loss)	-10,648,000	5,895,000	-11,249,000	7,621,000
Balance at the end of the period	6,935,000	15,315,000	6,935,000	15,315,000
Foreign Currency Translation	'	'	'	'
Changes in accumulated other comprehensive income (loss)	'	'	'	'
Balance at the beginning of the period	22,235,000	15,810,000	23,335,000	13,538,000
Other comprehensive income (loss) before reclassifications	-13,659,000	6,359,000	-14,759,000	8,631,000
Other comprehensive income (loss)	-13,659,000	6,359,000	-14,759,000	8,631,000
Balance at the end of the period	8,576,000	22,169,000	8,576,000	22,169,000
Defined Benefit Pension Plans, Net of Tax	'	'	'	'
Changes in accumulated other comprehensive income (loss)	'	'	'	'
Balance at the beginning of the period	-7,326,000	-7,487,000	-7,386,000	-7,662,000
Amounts reclassified out of AOCI	81,000	121,000	141,000	296,000
Other comprehensive income (loss)	81,000	121,000	141,000	296,000
Balance at the end of the period	-7,245,000	-7,366,000	-7,245,000	-7,366,000
Accumulated tax expense (benefit)	-2,200,000	-2,300,000	-2,200,000	-2,300,000
Post-Retirement Benefit Plans	'	'	'	'
Changes in accumulated other comprehensive income (loss)	'	'	'	'
Balance at the beginning of the period	1,412,000	1,748,000	1,464,000	1,818,000
Amounts reclassified out of AOCI	-52,000	-61,000	-104,000	-131,000
Other comprehensive income (loss)	-52,000	-61,000	-104,000	-131,000
Balance at the end of the period	1,360,000	1,687,000	1,360,000	1,687,000
Ownership Share of Equity Method Investees’ Other Comprehensive Income (Loss)	'	'	'	'
Changes in accumulated other comprehensive income (loss)	'	'	'	'
Balance at the beginning of the period	1,262,000	-651,000	771,000	0
Other comprehensive income (loss) before reclassifications	2,982,000	-524,000	3,473,000	-1,175,000
Other comprehensive income (loss)	2,982,000	-524,000	3,473,000	-1,175,000
Balance at the end of the period	$4,244,000	($1,175,000)	$4,244,000	($1,175,000)

Investment_in_NEC_TOKIN_Detail

Investment in NEC TOKIN (Details) (USD $)

6 Months Ended

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

0 Months Ended

6 Months Ended

6 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Feb. 01, 2013

Sep. 30, 2014

Sep. 30, 2014

Feb. 01, 2013

Mar. 12, 2012

Feb. 01, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

NEC TOKIN

Recurring

Recurring

Recurring

Recurring

Recurring

Senior Notes

Senior Notes

Stockholders' Agreement

Put Option

Put Option

KEC

KEC

KEC

KEC

KEC

Fair Value

Fair Value

Level 3

Level 3

director_position

Stock Purchase Agreement

Stock Purchase Agreement

Stockholders' Agreement

Option Agreement

Put Option

Fair Value

Fair Value

director_position

number_of_times

number_of_times

Schedule of Equity Method Investments [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Common stock acquired (as a percent)

'

'

'

'

'

'

'

'

'

'

51.00%

'

'

'

'

'

'

'

'

'

'

Economic ownership to be acquired (as a percent)

'

'

34.00%

34.00%

34.00%

34.00%

'

'

'

'

34.00%

'

49.00%

'

'

'

'

'

'

'

'

Purchase price paid

'

'

'

'

'

'

'

'

'

$50,000,000

'

'

'

'

'

'

'

'

'

'

'

Number of director positions

'

'

'

'

'

'

7

'

'

'

'

4

'

'

'

'

'

'

'

'

'

Purchase price for expected additional shares that may be acquired

'

'

'

'

'

'

'

'

'

'

'

'

50,000,000

'

'

'

'

'

'

'

'

Ownership interest maintained after acquisition of additional shares (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

51.00%

'

'

'

'

'

'

'

'

LTM EBITDA multiple

'

'

'

'

'

'

'

'

'

'

'

'

6

6

'

'

'

'

'

'

'

Interest rate of senior notes (as a percent)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

10.50%

10.50%

Gain recognized included in Other expense, net

10,700,000

-382,000

'

'

'

'

'

6,600,000

10,700,000

'

'

'

'

'

10,700,000

'

'

'

'

'

'

NEC TOKIN options, net

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

14,300,000

3,600,000

14,300,000

3,600,000

'

'

Summarized financial information

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current assets

'

'

232,991,000

245,709,000

232,991,000

245,709,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current assets

'

'

292,440,000

302,161,000

292,440,000

302,161,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Current liabilities

'

'

123,962,000

120,929,000

123,962,000

120,929,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Non-current liabilities

'

'

325,877,000

360,908,000

325,877,000

360,908,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Sales

'

'

129,677,000

135,074,000

252,085,000

258,266,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Gross profit

'

'

26,387,000

25,569,000

53,065,000

43,869,000

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Net income (loss)

'

'

$2,454,000

($3,213,000)

($700,000)

($11,942,000)

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Investment_in_NEC_TOKIN_Equity1

Investment in NEC TOKIN Equity Loss (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Equity income (loss) from NEC TOKIN	$232	($1,243)	($1,443)	($4,620)
Nectokin Corporation	'	'	'	'
Schedule of Equity Method Investments [Line Items]	'	'	'	'
Net income (loss)	2,454	-3,213	-700	-11,942
KEMET's equity ownership %	34.00%	34.00%	34.00%	34.00%
Equity income (loss) from NEC TOKIN before Adjustments	834	-1,092	-238	-4,060
Amortization and depreciation	-602	-405	-1,205	-814
Inventory valuation	0	254	0	254
Equity income (loss) from NEC TOKIN	$232	($1,243)	($1,443)	($4,620)

Investment_in_NEC_TOKIN_Invest

Investment in NEC TOKIN Investment in NEC TOKIN (Details 3) (Details) (USD $)	6 Months Ended	12 Months Ended
	Sep. 30, 2014	Mar. 31, 2014
Schedule of Equity Method Investments [Line Items]	'	'
Investment in NEC TOKIN	$48,449,000	$46,419,000
Nectokin Corporation	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Investment in NEC TOKIN	48,449,000	46,419,000
Property, plant and equipment	7,116,000	7,325,000
Technology	-15,450,000	-16,261,000
Long-term debt	-4,254,000	-4,754,000
Goodwill	-9,326,000	-9,326,000
Other	-834,000	-952,000
KEMET's 34% economic interest of NEC TOKIN's net assets	25,701,000	22,451,000
Sales to NEC TOKIN	4,000,000	5,900,000
Accounts receivable	1,800,000	2,000,000
Accounts payable	100,000	100,000
Stockholders' Agreement | KEC	'	'
Schedule of Equity Method Investments [Line Items]	'	'
Receivable balances	$500,000	$700,000

Segment_and_Geographic_Informa2

Segment and Geographic Information (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2014
			business_group
Segment Reporting [Abstract]	'	'	'	'	'
Number of business groups	'	'	2	'	'
Segment and geographic information	'	'	'	'	'
Net sales	$215,293	$208,449	$428,174	$410,506	'
Operating loss (loss)	12,770	1,585	12,164	-16,627	'
Depreciation and amortization expense	10,177	11,951	20,974	25,590	'
Restructuring charges included in Operating income (loss)	'	'	'	'	'
Restructuring charges	1,687	1,364	3,517	5,974	'
Assets	'	'	'	'	'
Total assets	817,227	'	817,227	'	843,667
North and South America (“Americas”)	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Net sales	72,167	65,398	138,150	124,751	'
Europe, Middle East, Africa (“EMEA”)	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Net sales	69,930	68,166	147,135	141,157	'
Asia and Pacific Rim (“APAC”)	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Net sales	73,196	74,885	142,889	144,598	'
Unallocated/Corporate	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Operating loss (loss)	-24,699	-21,590	-48,963	-46,292	'
Depreciation and amortization expense	1,513	1,466	3,015	3,380	'
Restructuring charges included in Operating income (loss)	'	'	'	'	'
Restructuring charges	18	203	129	357	'
Assets	'	'	'	'	'
Total assets	87,822	'	87,822	'	76,429
Solid Capacitors	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Number of manufacturing sites	'	'	9	'	'
Net sales	163,019	157,714	322,809	307,115	'
Operating loss (loss)	38,386	25,386	68,120	38,178	'
Depreciation and amortization expense	5,463	7,302	10,941	14,612	'
Restructuring charges included in Operating income (loss)	'	'	'	'	'
Restructuring charges	169	99	1,399	3,145	'
Assets	'	'	'	'	'
Total assets	475,009	'	475,009	'	479,377
Film and Electrolytic	'	'	'	'	'
Segment and geographic information	'	'	'	'	'
Number of manufacturing sites	'	'	12	'	'
Net sales	52,274	50,735	105,365	103,391	'
Operating loss (loss)	-917	-2,211	-6,993	-8,513	'
Depreciation and amortization expense	3,201	3,183	7,018	7,598	'
Restructuring charges included in Operating income (loss)	'	'	'	'	'
Restructuring charges	1,500	1,062	1,989	2,472	'
Assets	'	'	'	'	'
Total assets	$254,396	'	$254,396	'	$287,861

Defined_Benefit_Pension_and_Ot1

Defined Benefit Pension and Other Postretirement Benefit Plans (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Europe	'	'	'	'
Defined Benefit Plan Disclosure	'	'	'	'
Number of defined benefit pension plans	'	'	6	'
Singapore	'	'	'	'
Defined Benefit Plan Disclosure	'	'	'	'
Number of defined benefit pension plans	'	'	1	'
Mexico	'	'	'	'
Defined Benefit Plan Disclosure	'	'	'	'
Number of defined benefit pension plans	'	'	2	'
Pension	'	'	'	'
Net periodic benefit (income) costs	'	'	'	'
Net service cost	$338,000	$332,000	$676,000	$663,000
Interest cost	478,000	428,000	957,000	856,000
Expected return on net assets	-124,000	-110,000	-247,000	-219,000
Amortization:	'	'	'	'
Actuarial (gain) loss	76,000	79,000	132,000	157,000
Prior service cost	5,000	1,000	9,000	2,000
Total net periodic benefit (income) costs	773,000	730,000	1,527,000	1,459,000
Contribution by employer	'	'	500,000	'
Pension | Maximum	'	'	'	'
Amortization:	'	'	'	'
Estimated employer contribution in current fiscal year	'	'	1,600,000	'
Post-retirement Benefit Plan	'	'	'	'
Net periodic benefit (income) costs	'	'	'	'
Interest cost	6,000	7,000	12,000	12,000
Amortization:	'	'	'	'
Actuarial (gain) loss	-52,000	-61,000	-104,000	-131,000
Total net periodic benefit (income) costs	($46,000)	($54,000)	($92,000)	($119,000)

Stockbased_Compensation_Detail

Stock-based Compensation (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
			plan
Stock Options	'	'	'	'
Stock-based Compensation	'	'	'	'
Number of plans which reserved shares of common stock for issuance to executives and key employees	'	'	4	'
Expiration period	'	'	'10 years	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	$152	$281	$379	$577
Exercised (in shares)	'	'	6	28
Stock Options | Cost of sales	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	61	135	169	273
Stock Options | Selling, general and administrative expenses	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	86	137	201	284
Stock Options | Research and development	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	5	9	9	20
Stock Options | Minimum	'	'	'	'
Stock-based Compensation	'	'	'	'
Vesting period	'	'	'1 year	'
Stock Options | Maximum	'	'	'	'
Stock-based Compensation	'	'	'	'
Vesting period	'	'	'3 years	'
Restricted Stock	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	87	41	288	337
Restricted Stock | Executive leadership	'	'	'	'
Stock-based Compensation	'	'	'	'
Period of restriction for sale of shares	'	'	'90 days	'
Restricted Stock | Chief Executive Officer	'	'	'	'
Stock-based Compensation	'	'	'	'
Period of restriction for sale of shares	'	'	'90 days	'
Restricted Stock | Director	'	'	'	'
Stock-based Compensation	'	'	'	'
Period of restriction for sale of shares	'	'	'90 days	'
Restricted Stock | Cost of sales	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	21	-31	44	32
Restricted Stock | Selling, general and administrative expenses	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	66	72	244	305
LTIPs	'	'	'	'
Stock-based Compensation	'	'	'	'
Performance period	'	'	'2 years	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	719	337	1,285	714
LTIPs | Cost of sales	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	276	124	492	238
LTIPs | Selling, general and administrative expenses	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	344	169	632	383
LTIPs | Research and development	'	'	'	'
Major components of stock based compensation expense	'	'	'	'
Stock-based compensation expense	$99	$44	$161	$93
2013/2014 LTIP | Restricted stock units	'	'	'	'
Stock-based Compensation	'	'	'	'
Vesting period	'	'	'3 years	'
2014/2015 LTIP | Restricted stock units	'	'	'	'
Stock-based Compensation	'	'	'	'
Vesting period	'	'	'3 years	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax expense related to foreign operations	$2,600,000	$1,300,000	$3,900,000	$3,200,000
Income tax expense	2,583,000	1,444,000	3,865,000	3,260,000
State income tax expense	'	100,000	'	100,000
Income tax expense (benefit) from discontinued operations	1,017,000	-124,000	1,935,000	-360,000
U.S. federal income tax benefit	$0	$0	$0	$0

Basic_and_Diluted_Net_Loss_Per2

Basic and Diluted Net Loss Per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Numerator:	'	'	'	'
Income (loss) from continuing operations	$7,730	($11,945)	($2,753)	($45,575)
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	-1,400	-1,151	5,543	-2,661
Net income (loss)	$6,330	($13,096)	$2,790	($48,236)
Weighted-average shares outstanding:	'	'	'	'
Basic	45,400	45,092	45,337	45,057
Assumed conversion of employee stock grants	430	0	463	0
Assumed conversion of warrants	6,691	0	6,762	0
Diluted (in shares)	52,521	45,092	52,562	45,057
Net income (loss) per basic share:	'	'	'	'
Net income (loss) from continuing operations	$0.17	($0.26)	($0.06)	($1.01)
Net income (loss) from discontinued operations	($0.03)	($0.03)	$0.12	($0.06)
Net income (loss)	$0.14	($0.29)	$0.06	($1.07)
Net income (loss) per diluted share:	'	'	'	'
Net income (loss) from continuing operations	$0.15	($0.26)	($0.05)	($1.01)
Net income (loss) from discontinued operations	($0.03)	($0.03)	$0.11	($0.06)
Net income (loss)	$0.12	($0.29)	$0.06	($1.07)

Basic_and_Diluted_Net_Loss_Per3

Basic and Diluted Net Loss Per Common Share (Details 2)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Assumed conversion of employee stock grants	'	'	'	'
Common stock equivalents that could potentially dilute net income per basic share in the future, but were not included in the computation of diluted earnings per share because the impact would have been antidilutive	'	'	'	'
Common stock equivalents	1,001	2,234	1,030	1,941
Assumed conversion of warrants	'	'	'	'
Common stock equivalents that could potentially dilute net income per basic share in the future, but were not included in the computation of diluted earnings per share because the impact would have been antidilutive	'	'	'	'
Common stock equivalents	0	6,371	0	6,540

Concentrations_of_Risks_Detail

Concentrations of Risks (Details)

3 Months Ended

6 Months Ended

3 Months Ended

6 Months Ended

12 Months Ended

6 Months Ended

12 Months Ended

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2014

Mar. 31, 2014

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Net revenue

Accounts receivable

Accounts receivable

Accounts receivable

Accounts receivable

Sales risk

Sales risk

Sales risk

Sales risk

Sales risk

Sales risk

Sales risk

Sales risk

Electronics distributor risk

Electronics distributor risk

Sales risk

Sales risk

Sales risk

Sales risk

customer

customer

customer

customer

Minimum

Minimum

Minimum

Minimum

customer

customer

Maximum

Maximum

Concentration of Risk

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Number of customers exceeding threshold

1

1

1

1

'

'

'

'

'

'

0

0

'

'

Concentration risk, percentage

'

'

'

'

10.00%

10.00%

10.00%

10.00%

44.00%

43.00%

'

'

10.00%

10.00%

Condensed_Consolidating_Financ2

Condensed Consolidating Financial Statements (Details) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2013
Current assets:	'	'	'	'
Cash and cash equivalents	$51,576	$57,929	$57,700	$95,978
Accounts receivable, net	95,581	98,947	'	'
Intercompany receivable	0	0	'	'
Inventories, net	188,833	187,974	'	'
Prepaid expenses and other	40,229	36,871	'	'
Deferred income taxes	6,569	6,695	'	'
Current assets of discontinued operations	0	12,160	'	'
Total current assets	382,788	400,576	'	'
Property and equipment, net	275,498	292,648	'	'
Goodwill	35,584	35,584	'	'
Intangible assets, net	35,377	37,184	'	'
Investment in NEC TOKIN	48,449	46,419	'	'
Investments in subsidiaries	0	0	'	'
Restricted cash	12,955	13,512	'	'
Deferred income taxes	6,423	6,778	'	'
Other assets	20,153	10,130	'	'
Non-current assets of discontinued operations	0	836	'	'
Long-term intercompany receivable	0	0	'	'
Total assets	817,227	843,667	'	'
Current liabilities:	'	'	'	'
Current portion of long-term debt	25,826	7,297	'	'
Accounts payable	72,629	74,818	'	'
Intercompany payable	0	0	'	'
Accrued expenses	66,400	76,468	'	'
Income taxes payable and deferred income taxes	345	980	'	'
Current liabilities of discontinued operations	0	7,269	'	'
Total current liabilities	165,200	166,832	'	'
Long-term debt, less current portion	376,256	391,292	'	'
Other non-current obligations	52,246	55,864	'	'
Deferred income taxes	8,687	5,203	'	'
Non-current liabilities of discontinued operations	0	2,592	'	'
Long-term intercompany payable	0	0	'	'
Total stockholders’ equity	214,838	221,884	'	'
Total liabilities and stockholders’ equity	817,227	843,667	'	'
Reportable legal entities | Parent	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	641	616	1,656	17,202
Accounts receivable, net	0	0	'	'
Intercompany receivable	320,305	318,582	'	'
Inventories, net	0	0	'	'
Prepaid expenses and other	3,145	3,146	'	'
Deferred income taxes	0	0	'	'
Current assets of discontinued operations	'	0	'	'
Total current assets	324,091	322,344	'	'
Property and equipment, net	316	329	'	'
Goodwill	0	0	'	'
Intangible assets, net	0	0	'	'
Investment in NEC TOKIN	0	0	'	'
Investments in subsidiaries	421,754	402,090	'	'
Restricted cash	0	0	'	'
Deferred income taxes	0	0	'	'
Other assets	4,750	5,415	'	'
Non-current assets of discontinued operations	'	0	'	'
Long-term intercompany receivable	74,603	81,746	'	'
Total assets	825,514	811,924	'	'
Current liabilities:	'	'	'	'
Current portion of long-term debt	18,486	5,988	'	'
Accounts payable	93	84	'	'
Intercompany payable	208,989	176,624	'	'
Accrued expenses	25,301	34,236	'	'
Income taxes payable and deferred income taxes	0	0	'	'
Current liabilities of discontinued operations	'	0	'	'
Total current liabilities	252,869	216,932	'	'
Long-term debt, less current portion	357,807	372,251	'	'
Other non-current obligations	0	857	'	'
Deferred income taxes	0	0	'	'
Non-current liabilities of discontinued operations	'	0	'	'
Long-term intercompany payable	0	0	'	'
Total stockholders’ equity	214,838	221,884	'	'
Total liabilities and stockholders’ equity	825,514	811,924	'	'
Reportable legal entities | Guarantor Subsidiaries	'	'	'	'
Condensed Consolidating Balance Sheet	'	'	'	'
Percentage of ownership interest	100.00%	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	29,984	22,200	23,816	52,056
Accounts receivable, net	41,010	49,462	'	'
Intercompany receivable	348,367	329,211	'	'
Inventories, net	127,232	119,340	'	'
Prepaid expenses and other	16,610	15,286	'	'
Deferred income taxes	1,957	1,022	'	'
Current assets of discontinued operations	'	0	'	'
Total current assets	565,160	536,521	'	'
Property and equipment, net	101,498	104,874	'	'
Goodwill	35,584	35,584	'	'
Intangible assets, net	27,688	28,380	'	'
Investment in NEC TOKIN	48,449	46,419	'	'
Investments in subsidiaries	424,312	424,386	'	'
Restricted cash	12,955	13,512	'	'
Deferred income taxes	969	1,010	'	'
Other assets	14,486	3,895	'	'
Non-current assets of discontinued operations	'	0	'	'
Long-term intercompany receivable	58,634	60,663	'	'
Total assets	1,289,735	1,255,244	'	'
Current liabilities:	'	'	'	'
Current portion of long-term debt	6,800	0	'	'
Accounts payable	35,621	36,579	'	'
Intercompany payable	590,222	570,535	'	'
Accrued expenses	12,692	13,698	'	'
Income taxes payable and deferred income taxes	2,923	2,909	'	'
Current liabilities of discontinued operations	'	0	'	'
Total current liabilities	648,258	623,721	'	'
Long-term debt, less current portion	6,449	6,449	'	'
Other non-current obligations	3,626	3,311	'	'
Deferred income taxes	4,191	3,258	'	'
Non-current liabilities of discontinued operations	'	0	'	'
Long-term intercompany payable	74,603	81,747	'	'
Total stockholders’ equity	552,608	536,758	'	'
Total liabilities and stockholders’ equity	1,289,735	1,255,244	'	'
Reportable legal entities | Non-Guarantor Subsidiaries	'	'	'	'
Condensed Consolidating Balance Sheet	'	'	'	'
Percentage of capital stock	51.00%	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	20,951	35,113	32,228	26,720
Accounts receivable, net	54,571	49,485	'	'
Intercompany receivable	217,971	203,018	'	'
Inventories, net	61,601	68,634	'	'
Prepaid expenses and other	23,415	21,380	'	'
Deferred income taxes	4,612	5,673	'	'
Current assets of discontinued operations	'	12,160	'	'
Total current assets	383,121	395,463	'	'
Property and equipment, net	173,684	187,445	'	'
Goodwill	0	0	'	'
Intangible assets, net	7,689	8,804	'	'
Investment in NEC TOKIN	0	0	'	'
Investments in subsidiaries	30,285	30,285	'	'
Restricted cash	0	0	'	'
Deferred income taxes	5,454	5,768	'	'
Other assets	917	820	'	'
Non-current assets of discontinued operations	'	836	'	'
Long-term intercompany receivable	2,800	2,801	'	'
Total assets	603,950	632,222	'	'
Current liabilities:	'	'	'	'
Current portion of long-term debt	540	1,309	'	'
Accounts payable	36,915	38,155	'	'
Intercompany payable	87,432	103,652	'	'
Accrued expenses	28,407	28,534	'	'
Income taxes payable and deferred income taxes	363	1,012	'	'
Current liabilities of discontinued operations	'	7,269	'	'
Total current liabilities	153,657	179,931	'	'
Long-term debt, less current portion	12,000	12,592	'	'
Other non-current obligations	48,620	51,696	'	'
Deferred income taxes	4,496	1,945	'	'
Non-current liabilities of discontinued operations	'	2,592	'	'
Long-term intercompany payable	61,434	63,463	'	'
Total stockholders’ equity	323,743	320,003	'	'
Total liabilities and stockholders’ equity	603,950	632,222	'	'
Reclassifications and Eliminations	'	'	'	'
Current assets:	'	'	'	'
Cash and cash equivalents	0	0	0	0
Accounts receivable, net	0	0	'	'
Intercompany receivable	-886,643	-850,811	'	'
Inventories, net	0	0	'	'
Prepaid expenses and other	-2,941	-2,941	'	'
Deferred income taxes	0	0	'	'
Current assets of discontinued operations	'	0	'	'
Total current assets	-889,584	-853,752	'	'
Property and equipment, net	0	0	'	'
Goodwill	0	0	'	'
Intangible assets, net	0	0	'	'
Investment in NEC TOKIN	0	0	'	'
Investments in subsidiaries	-876,351	-856,761	'	'
Restricted cash	0	0	'	'
Deferred income taxes	0	0	'	'
Other assets	0	0	'	'
Non-current assets of discontinued operations	'	0	'	'
Long-term intercompany receivable	-136,037	-145,210	'	'
Total assets	-1,901,972	-1,855,723	'	'
Current liabilities:	'	'	'	'
Current portion of long-term debt	0	0	'	'
Accounts payable	0	0	'	'
Intercompany payable	-886,643	-850,811	'	'
Accrued expenses	0	0	'	'
Income taxes payable and deferred income taxes	-2,941	-2,941	'	'
Current liabilities of discontinued operations	'	0	'	'
Total current liabilities	-889,584	-853,752	'	'
Long-term debt, less current portion	0	0	'	'
Other non-current obligations	0	0	'	'
Deferred income taxes	0	0	'	'
Non-current liabilities of discontinued operations	'	0	'	'
Long-term intercompany payable	-136,037	-145,210	'	'
Total stockholders’ equity	-876,351	-856,761	'	'
Total liabilities and stockholders’ equity	($1,901,972)	($1,855,723)	'	'
10.5% Senior Notes, net of premium of $2,807 and $3,144 as of September 30, 2014 and March 31, 2014, respectively	'	'	'	'
Condensed Consolidating Balance Sheet	'	'	'	'
Interest rate of senior notes (as a percent)	10.50%	10.50%	'	'

Condensed_Consolidating_Financ3

Condensed Consolidating Financial Statements (Details 2) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidating Statement of Operations	'	'	'	'
Net sales	$215,293	$208,449	$428,174	$410,506
Operating costs and expenses:	'	'	'	'
Cost of sales	169,538	177,532	349,462	361,045
Selling, general and administrative expenses	25,510	22,315	50,289	48,395
Research and development	6,338	5,611	12,927	11,677
Restructuring charges	1,687	1,364	3,517	5,974
Net (gain) loss on sales and disposals of assets	-550	42	-185	42
Total operating costs and expenses	202,523	206,864	416,010	427,133
Operating income (loss)	12,770	1,585	12,164	-16,627
Interest income	-3	-11	-6	-175
Interest expense	10,287	9,908	20,743	19,942
Other (income) expense, net	-7,595	946	-11,128	1,301
Equity in earnings of subsidiaries	0	0	0	0
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	10,081	-9,258	2,555	-37,695
Income tax expense	2,583	1,444	3,865	3,260
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	7,498	-10,702	-1,310	-40,955
Equity income (loss) from NEC TOKIN	232	-1,243	-1,443	-4,620
Income (loss) from continuing operations	7,730	-11,945	-2,753	-45,575
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	-1,400	-1,151	5,543	-2,661
Net income (loss)	6,330	-13,096	2,790	-48,236
Reportable legal entities | Parent	'	'	'	'
Condensed Consolidating Statement of Operations	'	'	'	'
Net sales	57	67	110	86
Operating costs and expenses:	'	'	'	'
Cost of sales	561	299	1,025	691
Selling, general and administrative expenses	13,056	9,944	24,145	20,555
Research and development	140	54	206	144
Restructuring charges	0	0	0	0
Net (gain) loss on sales and disposals of assets	-9	0	-9	0
Total operating costs and expenses	13,748	10,297	25,367	21,390
Operating income (loss)	-13,691	-10,230	-25,257	-21,304
Interest income	0	-3	0	-11
Interest expense	9,726	10,065	19,524	20,194
Other (income) expense, net	-12,975	-9,915	-23,801	-19,975
Equity in earnings of subsidiaries	-16,772	2,703	-23,770	26,698
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	6,330	-13,080	2,790	-48,210
Income tax expense	0	0	0	0
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	6,330	-13,080	2,790	-48,210
Equity income (loss) from NEC TOKIN	0	0	0	0
Income (loss) from continuing operations	6,330	-13,080	2,790	-48,210
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	0	-16	0	-26
Net income (loss)	6,330	-13,096	2,790	-48,236
Reportable legal entities | Guarantor Subsidiaries	'	'	'	'
Condensed Consolidating Statement of Operations	'	'	'	'
Net sales	250,019	245,786	505,596	483,109
Operating costs and expenses:	'	'	'	'
Cost of sales	211,328	222,882	434,000	449,930
Selling, general and administrative expenses	15,071	16,075	32,223	28,132
Research and development	4,247	3,791	8,597	8,066
Restructuring charges	192	446	562	2,380
Net (gain) loss on sales and disposals of assets	43	18	230	18
Total operating costs and expenses	230,881	243,212	475,612	488,526
Operating income (loss)	19,138	2,574	29,984	-5,417
Interest income	0	0	0	-3
Interest expense	263	226	663	478
Other (income) expense, net	9,355	9,639	16,799	20,446
Equity in earnings of subsidiaries	0	0	0	0
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	9,520	-7,291	12,522	-26,338
Income tax expense	210	33	233	89
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	9,310	-7,324	12,289	-26,427
Equity income (loss) from NEC TOKIN	232	-1,243	-1,443	-4,620
Income (loss) from continuing operations	9,542	-8,567	10,846	-31,047
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	593	-250	104	-567
Net income (loss)	10,135	-8,817	10,950	-31,614
Reportable legal entities | Non-Guarantor Subsidiaries	'	'	'	'
Condensed Consolidating Statement of Operations	'	'	'	'
Net sales	198,983	208,798	400,202	415,743
Operating costs and expenses:	'	'	'	'
Cost of sales	175,839	184,945	360,747	373,114
Selling, general and administrative expenses	12,959	11,904	25,345	25,450
Research and development	1,951	1,766	4,124	3,467
Restructuring charges	1,495	918	2,955	3,594
Net (gain) loss on sales and disposals of assets	-584	24	-406	24
Total operating costs and expenses	191,660	199,557	392,765	405,649
Operating income (loss)	7,323	9,241	7,437	10,094
Interest income	-3	-8	-6	-161
Interest expense	298	-383	556	-730
Other (income) expense, net	-3,975	1,222	-4,126	830
Equity in earnings of subsidiaries	0	0	0	0
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	11,003	8,410	11,013	10,155
Income tax expense	2,373	1,411	3,632	3,171
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	8,630	6,999	7,381	6,984
Equity income (loss) from NEC TOKIN	0	0	0	0
Income (loss) from continuing operations	8,630	6,999	7,381	6,984
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	-1,993	-885	5,439	-2,068
Net income (loss)	6,637	6,114	12,820	4,916
Reclassifications and Eliminations	'	'	'	'
Condensed Consolidating Statement of Operations	'	'	'	'
Net sales	-233,766	-246,202	-477,734	-488,432
Operating costs and expenses:	'	'	'	'
Cost of sales	-218,190	-230,594	-446,310	-462,690
Selling, general and administrative expenses	-15,576	-15,608	-31,424	-25,742
Research and development	0	0	0	0
Restructuring charges	0	0	0	0
Net (gain) loss on sales and disposals of assets	0	0	0	0
Total operating costs and expenses	-233,766	-246,202	-477,734	-488,432
Operating income (loss)	0	0	0	0
Interest income	'	0	0	0
Interest expense	'	0	0	0
Other (income) expense, net	0	0	0	0
Equity in earnings of subsidiaries	16,772	-2,703	23,770	-26,698
Income (loss) from continuing operations before income taxes and equity income (loss) from NEC TOKIN	-16,772	2,703	-23,770	26,698
Income tax expense	0	0	0	0
Income (loss) from continuing operations before equity income (loss) from NEC TOKIN	-16,772	2,703	-23,770	26,698
Equity income (loss) from NEC TOKIN	0	0	0	0
Income (loss) from continuing operations	-16,772	2,703	-23,770	26,698
Income (loss) from discontinued operations, net of income tax expense (benefit) of $1,017, $(124), $1,935 and $(360), respectively	0	0	0	0
Net income (loss)	($16,772)	$2,703	($23,770)	$26,698

Condensed_Consolidating_Financ4

Condensed Consolidating Financial Statements (Details 3) (USD $)	3 Months Ended		6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Condensed Consolidated Statements of Comprehensive Income (Loss)	'	'	'	'
Comprehensive income (loss)	($4,318)	($7,201)	($8,459)	($40,615)
Reportable legal entities | Parent	'	'	'	'
Condensed Consolidated Statements of Comprehensive Income (Loss)	'	'	'	'
Comprehensive income (loss)	-44	-10,576	-4,354	-44,087
Reportable legal entities | Guarantor Subsidiaries	'	'	'	'
Condensed Consolidated Statements of Comprehensive Income (Loss)	'	'	'	'
Comprehensive income (loss)	14,431	-9,936	15,850	-34,978
Reportable legal entities | Non-Guarantor Subsidiaries	'	'	'	'
Condensed Consolidated Statements of Comprehensive Income (Loss)	'	'	'	'
Comprehensive income (loss)	-1,933	10,608	3,815	11,752
Reclassifications and Eliminations	'	'	'	'
Condensed Consolidated Statements of Comprehensive Income (Loss)	'	'	'	'
Comprehensive income (loss)	($16,772)	$2,703	($23,770)	$26,698

Condensed_Consolidating_Financ5

Condensed Consolidating Financial Statements (Details 4) (USD $)	6 Months Ended
In Thousands, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Sources (uses) of cash and cash equivalents	'	'
Net cash provided by (used in) operating activities	$1,594	($31,606)
Investing activities:	'	'
Capital expenditures	-11,975	-18,337
Change in restricted cash	558	2,874
Proceeds from sale of assets	2,451	0
Proceeds from sale of discontinued operations	10,125	0
Net cash provided by (used in) investing activities	1,159	-15,463
Financing activities:	'	'
Proceeds from revolving line of credit	14,300	21,000
Payments of revolving line credit	-7,500	0
Deferred acquisition payments	-11,597	-11,452
Payments of long-term debt	-3,135	-1,422
Proceeds from exercise of stock options	25	57
Net cash provided by (used in) financing activities	-7,907	8,183
Net increase (decrease) in cash and cash equivalents	-5,154	-38,886
Effect of foreign currency fluctuations on cash	-1,199	608
Cash and cash equivalents at beginning of fiscal period	57,929	95,978
Cash and cash equivalents at end of fiscal period	51,576	57,700
Reportable legal entities | Parent	'	'
Sources (uses) of cash and cash equivalents	'	'
Net cash provided by (used in) operating activities	12,417	-3,747
Investing activities:	'	'
Capital expenditures	0	'
Change in restricted cash	0	'
Proceeds from sale of assets	0	'
Proceeds from sale of discontinued operations	0	'
Net cash provided by (used in) investing activities	0	0
Financing activities:	'	'
Proceeds from revolving line of credit	0	0
Payments of revolving line credit	0	'
Deferred acquisition payments	-10,597	-10,452
Payments of long-term debt	-1,820	-1,404
Proceeds from exercise of stock options	25	57
Net cash provided by (used in) financing activities	-12,392	-11,799
Net increase (decrease) in cash and cash equivalents	25	-15,546
Effect of foreign currency fluctuations on cash	0	0
Cash and cash equivalents at beginning of fiscal period	616	17,202
Cash and cash equivalents at end of fiscal period	641	1,656
Reportable legal entities | Guarantor Subsidiaries	'	'
Sources (uses) of cash and cash equivalents	'	'
Net cash provided by (used in) operating activities	4,666	-29,147
Investing activities:	'	'
Capital expenditures	-5,514	-9,474
Change in restricted cash	558	2,874
Proceeds from sale of assets	2,273	'
Proceeds from sale of discontinued operations	0	'
Net cash provided by (used in) investing activities	-2,683	-6,600
Financing activities:	'	'
Proceeds from revolving line of credit	14,300	9,000
Payments of revolving line credit	-7,500	'
Deferred acquisition payments	-1,000	-1,000
Payments of long-term debt	0	-18
Proceeds from exercise of stock options	0	'
Net cash provided by (used in) financing activities	5,800	7,982
Net increase (decrease) in cash and cash equivalents	7,783	-27,765
Effect of foreign currency fluctuations on cash	1	-475
Cash and cash equivalents at beginning of fiscal period	22,200	52,056
Cash and cash equivalents at end of fiscal period	29,984	23,816
Reportable legal entities | Non-Guarantor Subsidiaries	'	'
Sources (uses) of cash and cash equivalents	'	'
Net cash provided by (used in) operating activities	-15,489	1,288
Investing activities:	'	'
Capital expenditures	-6,461	-8,863
Change in restricted cash	0	'
Proceeds from sale of assets	178	'
Proceeds from sale of discontinued operations	10,125	'
Net cash provided by (used in) investing activities	3,842	-8,863
Financing activities:	'	'
Proceeds from revolving line of credit	0	12,000
Payments of revolving line credit	0	'
Deferred acquisition payments	0	'
Payments of long-term debt	-1,315	'
Proceeds from exercise of stock options	0	'
Net cash provided by (used in) financing activities	-1,315	12,000
Net increase (decrease) in cash and cash equivalents	-12,962	4,425
Effect of foreign currency fluctuations on cash	-1,200	1,083
Cash and cash equivalents at beginning of fiscal period	35,113	26,720
Cash and cash equivalents at end of fiscal period	20,951	32,228
Reclassifications and Eliminations	'	'
Sources (uses) of cash and cash equivalents	'	'
Net cash provided by (used in) operating activities	0	0
Investing activities:	'	'
Capital expenditures	0	0
Change in restricted cash	0	0
Proceeds from sale of assets	0	'
Proceeds from sale of discontinued operations	0	'
Net cash provided by (used in) investing activities	0	0
Financing activities:	'	'
Proceeds from revolving line of credit	0	0
Payments of revolving line credit	0	'
Deferred acquisition payments	0	0
Payments of long-term debt	0	0
Proceeds from exercise of stock options	0	0
Net cash provided by (used in) financing activities	0	0
Net increase (decrease) in cash and cash equivalents	0	0
Effect of foreign currency fluctuations on cash	0	0
Cash and cash equivalents at beginning of fiscal period	0	0
Cash and cash equivalents at end of fiscal period	$0	$0