XML 67 R58.htm IDEA: XBRL DOCUMENT v3.7.0.1
Stockholders' Equity (Details) - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]    
Outstanding balance, Weighted Average Exercise Price $ 3.89 $ 3.57
Grants, Weighted Average Exercise Price 5.84 6.98
Terminations, Weighted Average Exercise Price 4.90 6.16
Exercises, Weighted Average Exercise Price 5.25 5.59
Outstanding balance, Weighted Average Exercise Price 4.53 $ 3.89
Exercisable, Weighted Average Exercise Price 2.64  
Weighted average exercise price vested and expected to vest $ 4.53  
Aggregate Intrinsic Value    
Outstanding balance, Aggregate Intrinsic Value [1] $ 517,000 $ 945,000
Outstanding balance, Aggregate Intrinsic Value [1] 369,000 $ 517,000
Exercisable, Aggregate Intrinsic Value [1] 468,000  
Weighted average exercise price aggregate intrinsic value [1] $ 369,000  
2000 Plan [Member] | Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Beginning Balance, Outstanding 126,500 131,500
Grants
Terminations (5,000) (5,000)
Exercises (1,000)
Ending balance, Outstanding 120,500 126,500
Vested 120,500  
Vested and expected to vest 120,500  
Aggregate Intrinsic Value    
Reserved for future grants  
2010 Plan [Member] | Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]    
Beginning Balance, Outstanding 124,500 106,500
Grants 124,000 46,000
Terminations (1,000) (12,000)
Exercises (16,000)
Ending balance, Outstanding 247,500 124,500
Vested 41,500  
Vested and expected to vest 247,500  
Aggregate Intrinsic Value    
Reserved for future grants 32,500  
[1] Intrinsic value is the difference between the fair market value as of the date indicated and as of the date of the option grant.