XML 87 R62.htm IDEA: XBRL DOCUMENT v3.3.1.900
Share-Based Compensation - Additional Information on Stock Options, Including Performance-Based Options, Outstanding and Exercisable (Detail)
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Options Outstanding, Shares Under Option | shares 14,180,496
Options Exercisable, Shares Under Option | shares 6,181,833
$0.01-$3.50  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 0.01
Range of Exercise Prices, Upper Limit $ 3.50
Options Outstanding, Shares Under Option | shares 1,243,295
Options Outstanding, Weighted-Average Remaining Contractual Life 2 years 9 months 15 days
Options Outstanding, Weighted-Average Exercise Price Per Share $ 2.22
Options Exercisable, Shares Under Option | shares 1,242,922
Options Exercisable, Weighted-Average Exercise Price per Share $ 2.22
$3.51 - $7.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit 3.51
Range of Exercise Prices, Upper Limit $ 7.00
Options Outstanding, Shares Under Option | shares 1,490,494
Options Outstanding, Weighted-Average Remaining Contractual Life 5 years 6 months 4 days
Options Outstanding, Weighted-Average Exercise Price Per Share $ 4.96
Options Exercisable, Shares Under Option | shares 1,366,102
Options Exercisable, Weighted-Average Exercise Price per Share $ 4.93
$7.01 - $10.50  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit 7.01
Range of Exercise Prices, Upper Limit $ 10.50
Options Outstanding, Shares Under Option | shares 4,613,292
Options Outstanding, Weighted-Average Remaining Contractual Life 8 years 9 months
Options Outstanding, Weighted-Average Exercise Price Per Share $ 8.74
Options Exercisable, Shares Under Option | shares 913,376
Options Exercisable, Weighted-Average Exercise Price per Share $ 8.99
$10.51 - $14.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit 10.51
Range of Exercise Prices, Upper Limit $ 14.00
Options Outstanding, Shares Under Option | shares 3,371,648
Options Outstanding, Weighted-Average Remaining Contractual Life 7 years 7 months 17 days
Options Outstanding, Weighted-Average Exercise Price Per Share $ 12.40
Options Exercisable, Shares Under Option | shares 1,669,645
Options Exercisable, Weighted-Average Exercise Price per Share $ 11.80
$14.01 - $17.50  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit 14.01
Range of Exercise Prices, Upper Limit $ 17.50
Options Outstanding, Shares Under Option | shares 2,099,517
Options Outstanding, Weighted-Average Remaining Contractual Life 9 years 1 month 6 days
Options Outstanding, Weighted-Average Exercise Price Per Share $ 15.35
Options Exercisable, Shares Under Option | shares 358,076
Options Exercisable, Weighted-Average Exercise Price per Share $ 15.81
$17.51 - $21.00  
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit 17.51
Range of Exercise Prices, Upper Limit $ 21.00
Options Outstanding, Shares Under Option | shares 1,362,250
Options Outstanding, Weighted-Average Remaining Contractual Life 7 years 8 months 19 days
Options Outstanding, Weighted-Average Exercise Price Per Share $ 18.93
Options Exercisable, Shares Under Option | shares 631,712
Options Exercisable, Weighted-Average Exercise Price per Share $ 18.92