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Note 3 - Balance Sheet Components (Details) (USD $)
 3 Months Ended 6 Months Ended 18 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Dec. 31, 2012
Disclosure Text Block Supplement [Abstract]            
Unbilled Receivables, Current $ 5,600,000   $ 5,600,000   $ 5,600,000 $ 7,700,000
Depreciation, Depletion and Amortization, Nonproduction 300,000 100,000 600,000 200,000    
Intangible Assets, Net (Excluding Goodwill) 68,000   68,000   68,000 104,000
Amortization of Intangible Assets 19,000 156,000 37,000 363,000 363,000  
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year 37,000   37,000   37,000  
Finite-Lived Intangible Assets, Amortization Expense, Year Two $ 31,000   $ 31,000   $ 31,000