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Stock-based Compensation (Details 1) - $ / shares
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Schedule Of Share Based Compensation Stock Options Activity [Line Items]    
Stock Options, Outstanding 659,000  
Stock Options, Granted 12,000  
Stock Options, Exercised (2,000)  
Stock Options, Forfeited (55,000)  
Stock Options, Outstanding 614,000 659,000
Stock Options, Exercisable 82,000  
Grant Date Weighted Average Exercise Price, Outstanding $ 3.13  
Grant Date Weighted Average Exercise Price, Granted 2.58  
Grant Date Weighted Average Exercise Price, Exercised 2.30  
Grant Date Weighted Average Exercise Price, Forfeited 5.97  
Grant Date Weighted Average Exercise Price, Outstanding 2.87 $ 3.13
Grant Date Weighted Average Exercise Price, Exercisable $ 2.74  
Weighted Average Remaining Contractual Life (Years), Balance 6 years 29 days 5 years 6 months 25 days
Weighted Average Remaining Contractual Life (Years), Exercisable 3 years 5 months 8 days