Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 2)

v2.4.0.6
Income Taxes (Details 2) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2011
Deferred Tax Liability Not Recognized [Line Items]      
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts $ 4 $ 3  
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax 697 697  
Deferred Tax Assets, Tax Credit Carryforwards, Foreign 674 718  
Deferred Tax Assets, Tax Credit Carryforwards, Research 2,735 3,451  
Deferred Tax Liabilities, Property, Plant and Equipment (1,224) (1,286)  
Deferred Tax Assets, Tax Deferred Expense, Compensation and Benefits, Employee Compensation 1,326 1,186  
Deferred Tax Assets, Inventory 888 575  
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Warranty Reserves 57 90  
Deferred Tax Assets, Operating Loss Carryforwards 29,315 25,874  
Deferred Tax Liabilities, Intangible Assets (689) (172)  
Deferred Tax Assets, Other 1,105 518  
Deferred Tax Assets, Gross 38,714 34,570  
Deferred Tax Assets, Valuation Allowance 36,285 2,253 (1,700)
Deferred Tax Assets, Net $ 2,429 $ 32,317