Quarterly report pursuant to Section 13 or 15(d)

Net Income Per Share - Calculation of net income per share (Details)

v3.19.1
Net Income Per Share - Calculation of net income per share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Numerator (both basic and diluted)    
Net income relevant to common stockholders $ 69,805 $ 36,708
Denominator    
Denominator for basic earnings (loss) per share (in shares) 100,232 83,081
Denominator for diluted income (loss) per share (in shares) 104,123 86,848
Basic income (loss) per common share (in dollars per share) $ 0.70 $ 0.44
Diluted income (loss) per common share (in dollars per share) $ 0.67 $ 0.42
Stock options    
Denominator    
Dilutive effect of share based payment (in shares) 3,160 3,191
Performance stock units    
Denominator    
Dilutive effect of share based payment (in shares) 555 96
Non-vested restricted stock    
Denominator    
Dilutive effect of share based payment (in shares) 176 480