XML 70 R54.htm IDEA: XBRL DOCUMENT v3.3.1.900
Net income per share attributable to common stockholders - Basic and Diluted Net Income per Share Attributable to Common Stockholders (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Net income $ 36,131 $ 128,088 $ 60,578
Less: net income allocable to participating securities 0 (16,512) (16,727)
Numerator:      
Net income attributable to common stockholders—basic 36,131 111,576 43,851
Add: net income allocable to dilutive participating securities 0 2,277 2,309
Reallocation of net income     0
Undistributed Earnings (Loss) Reallocated to Participating Securities, Diluted     0
Net income attributable to common stockholders—diluted $ 36,131 $ 113,853 $ 46,160
Denominator:      
Weighted-average common shares—basic (in shares) 134,595 104,453 81,018
Conversion of Class B to Class A common stock outstanding (in shares)     0
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares)     17,923
Weighted-average common shares—diluted (in shares) 146,486 123,630 98,941
Net income per share attributable to common stockholders - Basic (in dollars per share) $ 0.27 $ 1.07 $ 0.54
Net income per share attributable to common stockholders - Diluted (in dollars per share) $ 0.25 $ 0.92 $ 0.47
Common Class A [Member]      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Net income $ 24,559 $ 16,647  
Less: net income allocable to participating securities 0 (2,147)  
Numerator:      
Net income attributable to common stockholders—basic 24,559 14,500  
Add: net income allocable to dilutive participating securities 0 2,277  
Reallocation of net income 11,572 97,076  
Undistributed Earnings (Loss) Reallocated to Participating Securities, Diluted 0 0  
Net income attributable to common stockholders—diluted $ 36,131 $ 113,853  
Denominator:      
Weighted-average common shares—basic (in shares) 91,486 13,575  
Conversion of Class B to Class A common stock outstanding (in shares) 43,109 90,878  
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares) 11,891 19,177  
Weighted-average common shares—diluted (in shares) 146,486 123,630  
Net income per share attributable to common stockholders - Basic (in dollars per share) $ 0.27 $ 1.07  
Net income per share attributable to common stockholders - Diluted (in dollars per share) $ 0.25 $ 0.92  
Common Class B [Member]      
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]      
Net income $ 11,572 $ 111,441  
Less: net income allocable to participating securities 0 (14,365)  
Numerator:      
Net income attributable to common stockholders—basic 11,572 97,076  
Add: net income allocable to dilutive participating securities $ 0 1,981  
Reallocation of net income 0  
Undistributed Earnings (Loss) Reallocated to Participating Securities, Diluted $ 1,974 2,237  
Net income attributable to common stockholders—diluted $ 13,546 $ 101,294  
Denominator:      
Weighted-average common shares—basic (in shares) 43,109 90,878  
Conversion of Class B to Class A common stock outstanding (in shares) 0 0  
Effect of potentially dilutive stock options, ESPP shares and RSUs (in shares) 11,810 19,115  
Weighted-average common shares—diluted (in shares) 54,919 109,993  
Net income per share attributable to common stockholders - Basic (in dollars per share) $ 0.27 $ 1.07  
Net income per share attributable to common stockholders - Diluted (in dollars per share) $ 0.25 $ 0.92