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Earnings Per Share - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Earnings Per Share [Abstract]        
Net income attributable to stockholders $ 5,200 $ 15,763 $ 12,629 $ 22,251
Adjustments to net income attributable to stockholders for common share equivalents (185) (193) (370) (388)
Adjusted net income attributable to stockholders $ 5,015 $ 15,570 $ 12,259 $ 21,863
Basic and diluted net income per share attributable to stockholders (usd per share) $ 0.08 $ 0.28 $ 0.18 $ 0.39
Basic and diluted weighted average shares outstanding (shares) 66,652,221 56,316,157 66,461,663 56,314,184