XML 60 R46.htm IDEA: XBRL DOCUMENT v3.10.0.1
Activity Under Equity Incentive Plans Related to RSUs (Detail) - 2008 Equity Incentive Plan - Restricted Stock Units
shares in Thousands
9 Months Ended
Sep. 30, 2018
$ / shares
shares
Activity under the Company's equity incentive plans related to restricted stock units  
Number of Restricted Stock Units Unvested, Beginning Balance | shares 1,256
Granted, Number of Restricted Stock Units Unvested | shares 1,382 [1]
Vested, Number of Restricted Stock Units Unvested | shares (521)
Forfeited, Number of Restricted Stock Units Unvested | shares (139)
Number of Restricted Stock Units Unvested, Ending Balance | shares 1,978
Weighted Average Exercise Price per Share  
Weighted Average Exercise Price per Share, Beginning Balance | $ / shares $ 4.53
Granted, Weighted Average Exercise Price per Share | $ / shares 4.45 [1]
Vested, Weighted Average Exercise Price per Share | $ / shares 4.45
Forfeited, Weighted Average Exercise Price per Share | $ / shares 4.20
Weighted Average Exercise Price per Share, Ending Balance | $ / shares $ 4.52
[1] Includes the number of shares issuable under the performance-based restricted stock unit awards granted during the nine months ended September 30, 2018.