Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

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Income Taxes (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Components of Income (loss) before income taxes      
Domestic (U.S.) $ (90,028) $ (6,568) $ 27,473
Foreign (Outside U.S.) 12,418 15,012 38,275
Income (loss) before income taxes and equity loss from NEC TOKIN (77,610) 8,444 65,748
Current:      
Federal   (938)  
State and local 37 49 58
Foreign 3,598 7,195 6,049
Total current tax expense 3,635 6,306 6,107
Deferred:      
Federal (65) 11 21
State and local 700 (394) 99
Foreign (952) (4,171) (3,523)
Total deferred tax expense (317) (4,554) (3,403)
Income tax expense 3,318 1,752 2,704
Reconciliation of the statutory federal income tax rate to the effective income tax rate      
Statutory U.S. federal income tax rate (as a percent) 35.00% 35.00% 35.00%
Change in U.S. valuation allowance (as a percent) (35.50%) 13.20% (22.90%)
Taxable foreign source income (as a percent) (4.60%) 4.60% 6.80%
State income taxes, net of federal taxes (as a percent) (1.00%) 4.90% 0.20%
Other non-deductible expenses (as a percent) (0.40%) 3.50% 1.50%
Income tax settlements (as a percent)   (14.10%)  
Change in foreign operations valuation allowance (as a percent) 5.90% (112.20%) (20.80%)
Other effect of foreign operations (as a percent) (3.70%) 85.80% 4.30%
Effective income tax rate (as a percent) (4.30%) 20.70% 4.10%
Deferred tax assets:      
Net operating loss carry forwards 154,841 135,458  
Sales allowances and inventory reserves 14,683 12,937  
Tax credits 11,664 11,763  
Medical and employee benefits 7,868 8,960  
Stock options 3,416 3,574  
Other 4,615 8,259  
Total deferred tax assets before valuation allowance 197,087 180,951  
Less valuation allowance (169,270) (149,306)  
Total deferred tax assets 27,817 31,645  
Deferred tax liabilities:      
Depreciation and differences in basis (14,629) (14,598)  
Amortization of intangibles and debt discounts (6,978) (9,394)  
Non-amortized intangibles (2,542) (2,591)  
Other (72) (949)  
Total deferred tax liabilities (24,221) (27,532)  
Net deferred tax asset $ 3,596 $ 4,113