Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details Textual)

v3.8.0.1
Stock-based Compensation (Details Textual) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2,235,035   2,315,035
Share-based Compensation $ 324 $ 153  
Equity Incentive Plan 2013 [Member]      
Common Stock, Capital Shares Reserved for Future Issuance 499,207    
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 579,402    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 1,400    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 2 years 9 months 18 days    
Restricted Stock [Member]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 2,200    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 3 years 2 months 12 days    
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Outstanding, Number 250,000