Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity (Details 8)

v3.8.0.1
Stockholders' Equity (Details 8) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Number of Shares Available for Grant [Roll Forward]    
Balance at beginning 443,565 611,313
Authorized 750,000  
Granted (330,884) (229,497)
Forfeited 202,322 61,749
Balance at ending 1,065,003 443,565
Options Outstanding Number of Shares [Roll Forward]    
Balance at beginning 915,572 752,324
Granted 134,933 229,497
Exercised (284,370) (4,500)
Forfeited (187,322) (61,749)
Balance at ending 578,813 915,572
Vested and exercisable 376,039  
Options Outstanding Weighted- Average Exercise Price Per Share [Roll Forward]    
Balance at beginning $ 4.96 $ 3.95
Granted 11.19 8.56
Exercised 3.77 4.18
Forfeited 6.44 6.14
Balance at ending 6.51 $ 4.96
Vested and exercisable $ 5.58  
Options Outstanding Weighted- Average Remaining Contractural Life [Roll Forward]    
Balance at ending 3 years 3 months 7 days  
Vested and exercisable 3 years  
Options Outstanding Aggregate Intrinsic Value [Roll Forward]    
Balance at ending  
Vested and exercisable  
Restricted Stock [Member]    
Options Outstanding Number of Shares [Roll Forward]    
Balance at beginning
Granted 195,951
Exercised
Forfeited (15,000)
Balance at ending 180,951
Options Outstanding Weighted- Average Exercise Price Per Share [Roll Forward]    
Balance at beginning
Granted 7.28
Exercised  
Forfeited 5.78
Balance at ending $ 7.40