Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details)

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Income Taxes (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 01, 2007
Mar. 31, 2015
Mar. 31, 2014
Income Taxes [Abstract]      
Percentage of cumulative ownership change considered for limitations on net operating losses   50.00%  
Period of cumulative ownership change considered for limitations on net operating losses   3 years  
Accrued interest and penalties related to uncertain tax positions   $ 0  
Components of income (loss) from continuing operations before income taxes [Abstract]      
Domestic   (5,465) $ (3,548)
Foreign   0 0
Loss before income tax benefit   (5,465) (3,548)
Current [Abstract]      
U.S. Federal   0 0
State and Local   4 2
Foreign (credit)   0 0
Total current tax expense   4 2
Deferred [Abstract]      
U.S. Federal   (305) (81)
State and Local   0 0
Foreign (credit)   0 0
Total deferred tax (benefit)   (305) (81)
Income tax reconciliation [Abstract]      
Federal tax expense (benefit) at U.S. Statutory Rate   (1,754) (1,126)
State tax expense (benefit) net of federal tax effect   (301) (193)
Change in valuation allowance   (1,444) 1,196
Tax effect of acquired net operating loss carryforwards   3,382 0
Foreign Sub F Germany   0 251
Amortization of deferred tax liability   (305) (81)
Other items   121 (126)
Total income tax (benefit)   (301) (79)
Deferred tax liabilities [Abstract]      
Intangible assets   (195) (500)
Deferred tax assets [Abstract]      
Deferred revenue   0 48
Accruals, reserves and other   2,612 1,932
Net operating loss carryforwards   43,158 45,142
Credit carryforward   2,000 2,397
Capitalized research and development costs   299 299
Other   5 5
Gross deferred tax assets   47,879 49,323
Valuation allowance   (47,879) (49,323)
Net deferred tax asset   0 0
Reduction to deferred tax assets for unrecognized tax benefits $ 1,400    
Tabular Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Balance as of beginning of period   899 822
Increase/(Decrease) of unrecognized tax benefits taken in prior years   0 0
Increase/(Decrease) of unrecognized tax benefits related to current year   (72) 77
Increase/(Decrease) of unrecognized tax benefits related to settlements   0 0
Reductions to unrecognized tax benefits related to lapsing statute of limitations   0 0
Balance as of end of period   827 899
Total interest and penalties   0  
Valuation allowance change in amount   (1,400) $ 1,200
Federal [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards   $ 118,200  
Expiration dates   Mar. 31, 2013  
Federal [Member] | Research and Experimentation Tax Credit Carryforward [Member]      
Tax Credit Carryforward [Line Items]      
Tax credit carryforward, amount   $ 900  
Tax credit carryforward, expiration date   Mar. 31, 2012  
California [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards   $ 50,400  
Expiration dates   Mar. 31, 2013  
California [Member] | Research and Experimentation Tax Credit Carryforward [Member]      
Tax Credit Carryforward [Line Items]      
Tax credit carryforward, amount   $ 900