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Debt and Shareholders' Equity (Details Narrative) (USD $)
In Thousands, except Share data, unless otherwise specified
1 Months Ended 3 Months Ended
Apr. 30, 2013
Apr. 30, 2012
Mar. 31, 2015
Dec. 31, 2014
Apr. 25, 2013
Apr. 05, 2012
Debt And Shareholders Equity Details Narrative            
Outstanding borrowings under revolving loan agreement     $ 27,551us-gaap_LineOfCredit $ 24,147us-gaap_LineOfCredit    
Credit facility borrowing capacity         40,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity 30,000us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Interest rate of LIBOR plus percentage 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1        
Credit facility interest rate Interest rate of LIBOR plus 1.75%          
Credit facility expiration date Apr. 05, 2017          
Covenant terms and compliance    

Under the amended loan agreement, the Company continues to be required to maintain specific amounts of tangible net worth, a debt/net worth ratio, and a fixed charge coverage ratio. At March 31, 2015, the Company was in compliance with these covenants.

     
Common stock issued upon exercise of employee stock options (in shares)     22,000us-gaap_StockIssuedDuringPeriodSharesShareBasedCompensation      
Cash received upon exercise of employee stock options     $ 321us-gaap_EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions