Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details)

v3.10.0.1
Stock-based Compensation (Details) - 2014 Plan [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended
Jun. 30, 2018
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options Outstanding, Beginning Balance | shares 3,156
Options Outstanding, Options granted | shares 221
Options Outstanding, Options exercised | shares 0
Options Outstanding, Options forfeited | shares (365)
Options Outstanding, Options cancelled | shares (96)
Options Outstanding, Ending Balance | shares 2,916
Options Outstanding, Vested and expected to vest | shares 2,916
Options Outstanding, Exercisable | shares 1,897
Weighted-Average Exercise Price, Beginning Balance | $ / shares $ 4.96
Weighted-Average Exercise Price, Options granted | $ / shares 1.83
Weighted-Average Exercise Price, Options exercised | $ / shares 0
Weighted-Average Exercise Price, Options forfeited | $ / shares 4.93
Weighted-Average Exercise Price, Options cancelled | $ / shares 8.65
Weighted-Average Exercise Price, Ending Balance | $ / shares 4.60
Weighted-Average Exercise Price, Vested and expected to vest | $ / shares 4.60
Weighted-Average Exercise Price, Exercisable | $ / shares $ 5.78
Weighted-Average Remaining Contractual Life (Years), Ending Balance 7 years 22 days
Weighted-Average Remaining Contractual Life (Years), Vested and expected to vest 7 years 22 days
Weighted-Average Remaining Contractual Life (Years), Exercisable 5 years 11 months 23 days
Aggregate Intrinsic Value, Ending Balance | $ $ 430
Aggregate Intrinsic Value, Vested and expected to vest | $ 430
Aggregate Intrinsic Value, Exercisable | $ $ 84