Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
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, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Numerator:        
Net income available to common stockholders for basic and diluted net income per common share $ 292,352 $ 202,109 $ 581,793 $ 409,182
Denominator:        
Weighted average common shares outstanding for basic net income per common share (in shares) 4,481,930 4,652,426 4,486,620 4,681,223
Weighted average impact of dilutive equity instruments (in shares) 107,165 83,166 102,366 78,518
Weighted average shares for diluted net income per common share (in shares) 4,589,095 4,735,592 4,588,986 4,759,741
Net income per common share:        
Basic (in dollars per share) $ 0.07 $ 0.04 $ 0.13 $ 0.09
Diluted (in dollars per share) $ 0.06 $ 0.04 $ 0.13 $ 0.09