Annual report pursuant to Section 13 and 15(d)

Stock-Based Compensation (Details Textual)

v3.19.1
Stock-Based Compensation (Details Textual) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Stock-Based Compensation (Textual)    
Issuance of common stock shares 1,085,096 47,364
Stock Options [Member]    
Stock-Based Compensation (Textual)    
Weighted average grant-date fair value of stock options granted $ 0.15 $ 0.28
Total fair value for options $ 343 $ 113
Aggregate intrinsic value of options 483 $ 4
Estimated stock price   $ 0.24
Unrecognized compensation expense $ 640 $ 181
Exercised option, shares 293,778 53,251
Straight-line basis over weighted average period 2 years 8 months 12 days  
2018 Equity Incentive Plan [Member]    
Stock-Based Compensation (Textual)    
Common stock reserved for issuance 2,729,416  
Issuance of common stock shares 2,372,893  
2009 Equity Incentive Plan [Member]    
Stock-Based Compensation (Textual)    
Common stock reserved for issuance 0 1,932,300
Unvested shares 40,707 22,451
Accrued expenses $ 34 $ 12