Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation and Other Benefit Plans - Summary of Warrant Activity (Details)

v3.8.0.1
Stock-Based Compensation and Other Benefit Plans - Summary of Warrant Activity (Details) - 2008 Warrants
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2018
USD ($)
$ / shares
shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]  
Options, Outstanding | shares 105,000
Options, Exercised | shares (15,000)
Options, Outstanding | shares 90,000
Options, Exercisable | shares 90,000
Options, Vested | shares 90,000
Weighted Average Exercise Price, Outstanding | $ / shares $ 10.00
Weighted Average Exercise Price, Exercised | $ / shares 10.00
Weighted Average Exercise Price, Outstanding | $ / shares 10.00
Weighted Average Exercise Price, Exercisable | $ / shares 10.00
Weighted Average Exercise Price, Vested | $ / shares $ 10.00
Aggregate Intrinsic Value, Exercised | $ $ 68
Aggregate Intrinsic Value, Outstanding | $ 405
Aggregate Intrinsic Value, Exercisable | $ 405
Aggregate Intrinsic Value, Vested | $ $ 405
Weighted Average Remaining Contractual Life (Years), Outstanding 7 months 17 days
Weighted Average Remaining Contractual Life (Years), Exercisable 7 months 17 days
Weighted Average Remaining Contractual Life (Years), Vested 7 months 17 days