Quarterly report pursuant to Section 13 or 15(d)

Stockholder's Equity (Details 1)

v3.10.0.1
Stockholder's Equity (Details 1) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Outstanding beginning 1,803,094  
Granted 252,000  
Exercised (15,292)  
Forfeited/canceled (75,348)  
Outstanding ending 1,964,454 1,803,094
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]    
Outstanding beginning $ 4.41  
Granted 4.99  
Exercised 3.31  
Forfeited/canceled 4.60  
Outstanding ending $ 4.48 $ 4.41
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Life [Roll Forward]    
Outstanding beginning 9 years 2 months 8 days  
Outstanding ending 8 years 7 months 17 days 9 years 2 months 8 days
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Aggregate Intrinsic Value [Roll Forward]    
Outstanding beginning $ 334  
Exercised 33  
Outstanding ending $ 1,279 $ 334