Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Schedule of Earnings Per Share (Details)

v3.7.0.1
Earnings per Share - Schedule of Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Numerator:        
Net income available to common stockholders for basic and diluted net income per common share $ 202,109 $ 174,965 $ 409,182 $ 347,405
Denominator:        
Weighted average common shares outstanding for basic net income per common share (in shares) 4,652,426 4,938,820 4,681,223 5,002,070
Weighted average impact of dilutive equity instruments (in shares) 83,166 49,427 78,518 47,501
Weighted average shares for diluted net income per common share (in shares) 4,735,592 4,988,247 4,759,741 5,049,571
Net income per common share:        
Basic (in dollars per share) $ 0.04 $ 0.04 $ 0.09 $ 0.07
Diluted (in dollars per share) $ 0.04 $ 0.04 $ 0.09 $ 0.07