Annual report pursuant to Section 13 and 15(d)

Stock-based Compensation (Detail Textuals)

v3.19.1
Stock-based Compensation (Detail Textuals) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 12 Months Ended
Oct. 31, 2013
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation   $ 1,313 $ 1,052  
Weighted-average fair value of stock options issued   $ 0 $ 0.77  
Options outstanding (in shares)   2,001,008 2,315,035 1,857,012
General and Administrative Expense        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation   $ 1,300 $ 1,100  
Restricted Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized compensation cost related to non-vested awards   $ 1,200    
Unrecognized compensation cost, recognition period   3 years 1 month 6 days    
Restricted shares outstanding   150,000    
Stock Options        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of options vested   $ 500 400  
Options outstanding (in shares)   579,402    
Unrecognized compensation cost related to non-vested awards   $ 600    
Unrecognized compensation cost, recognition period   2 years 9 months 18 days    
The 2013 Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Authorized shares (in shares) 4,773,992      
Contractual term 10 years      
Shares remaining available for issuance (in shares)   596,951    
Director        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation   $ 100 $ 200