Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation (Details)

v3.7.0.1
Stock-based Compensation (Details) - 2014 Plan [Member]
$ / shares in Units, shares in Thousands, $ in Thousands
 6 Months Ended
Jun. 30, 2017
USD ($)
$ / shares
shares
Options Outstanding  
Options Outstanding, Beginning Balance | shares 2,477
Options Outstanding, Options granted | shares 266
Options Outstanding, Options exercised | shares (73)
Options Outstanding, Options forfeited | shares (105)
Options Outstanding, Options cancelled | shares (28)
Options Outstanding, Ending Balance | shares 2,537
Options Outstanding, Vested and expected to vest | shares 2,537
Options Outstanding, Exercisable | shares 1,424
Weighted-Average Exercise Price, Beginning Balance | $ / shares $ 6.5
Weighted-Average Exercise Price, Options granted | $ / shares 2.98
Weighted-Average Exercise Price, Options exercised | $ / shares 0.58
Weighted-Average Exercise Price, Options forfeited | $ / shares 7.69
Weighted-Average Exercise Price, Options cancelled | $ / shares 8.12
Weighted-Average Exercise Price, Ending Balance | $ / shares 6.23
Weighted-Average Exercise Price, Vested and expected to vest | $ / shares 6.23
Weighted-Average Exercise Price, Exercisable | $ / shares $ 6.44
Weighted-Average Remaining Contractual Life (Years), Ending Balance 7 years 2 months 26 days
Weighted-Average Remaining Contractual Life (Years), Vested and expected to vest 7 years 2 months 26 days
Weighted-Average Remaining Contractual Life (Years), Exercisable 5 years 11 months 26 days
Aggregate Intrinsic Value, Ending Balance | $ $ 75
Aggregate Intrinsic Value, Vested and expected to vest | $ 75
Aggregate Intrinsic Value, Exercisable | $ $ 75