Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details)

v3.8.0.1
Stock-Based Compensation - Schedule of Share-based Compensation, Stock Options, Activity (Details)
$ / shares in Units, $ in Thousands
 3 Months Ended
Mar. 31, 2018
USD ($)
$ / shares
shares
Number of shares available for grant, ending 1,813,000
Total options outstanding, Exercised (128,000)
Weighted Average Exercise Price, ending | $ / shares $ 10.78
Aggregate Intrinsic Value, ending | $ $ 569
Stock Option [Member]  
Number of shares available for grant, beginning 1,656,000
Number of shares available for grant, Exercised
Number of shares available for grant, Granted
Number of shares available for grant, Cancelled 157,000
Number of shares available for grant, ending 1,813,000
Total options outstanding, beginning 711,000
Total options outstanding, Exercised (128,000)
Total options outstanding, Granted
Total options outstanding, Cancelled (157,000)
Total options outstanding, ending 426,000
Weighted Average Exercise Price, outstanding | $ / shares $ 8.39
Weighted Average Exercise Price, Exercised | $ / shares 1.45
Weighted Average Exercise Price, Granted | $ / shares
Weighted Average Exercise Price, Cancelled | $ / shares 3.01
Weighted Average Exercise Price, ending | $ / shares $ 12.44
Aggregate Intrinsic Value, outstanding | $ $ 1,640
Aggregate Intrinsic Value, ending | $ $ 1,192