Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation - RSU Activity (Details)

v3.10.0.1
Stock-based Compensation - RSU Activity (Details) - RSU
shares in Thousands
 9 Months Ended
Sep. 30, 2018
$ / shares
shares
Number of Shares  
Beginning Balance (in shares) | shares 617
Granted (in shares) | shares 354
Vested (in shares) | shares (584)
Forfeited (in shares) | shares (94)
Ending Balance (in shares) | shares 293
Weighted- Average Grant Date Fair Value  
Beginning Balance (in dollars per share) | $ / shares $ 1.65
Granted (in dollars per share) | $ / shares 1.78
Vested (in dollars per share) | $ / shares 1.45
Forfeited (in dollars per share) | $ / shares 2.78
Ending Balance (in dollars per share) | $ / shares $ 1.82