Quarterly report pursuant to Section 13 or 15(d)

Compensation (Stock Option Activity) (Detail)

v3.5.0.2
Compensation (Stock Option Activity) (Detail)
shares in Thousands
6 Months Ended
Jun. 30, 2016
$ / shares
shares
Compensation [Abstract]  
Number of Shares Underlying Options, Outstanding at beginning of period | shares 4,144
Number of Shares Underlying Options, Granted | shares 1,519
Number of Shares Underlying Options, Forfeited | shares (1,058)
Number of Shares Underlying Options, Outstanding at end of period | shares 4,605
Weighted Average Exercise Price Per Share, Outstanding at beginning of period | $ / shares $ 6.41
Weighted Average Exercise Price Per Share, Granted | $ / shares 1.16
Weighted Average Exercise Price Per Share, Forfeited | $ / shares 5.62
Weighted Average Exercise Price Per Share, Outstanding at end of period | $ / shares $ 4.86