Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details Textual)

v3.10.0.1
Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2,029,508   2,029,508   2,315,035
Share-based Compensation $ 337 $ 200 $ 1,005 $ 744  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period     49,179    
Allocated Share-based Compensation Expense     $ 100    
General and Administrative Expense [Member]          
Share-based Compensation $ 300 $ 200 $ 1,000 $ 700  
Equity Incentive Plan 2013 [Member]          
Common Stock, Capital Shares Reserved for Future Issuance 597,608   597,608    
Employee Stock Option [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 579,402   579,402    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 1,000   $ 1,000    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     2 years 4 months 24 days    
Restricted Stock [Member]          
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 1,900   $ 1,900    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition     2 years 6 months    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 150,000   150,000