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Basis of Presentation - Schedule of Basic and Diluted Earnings Per Common Share (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
Basic earnings per share calculation: |  |  |  |
Net income | $ 11,239 | $ 15,775 | $ 20,992 | $ 30,374
Weighted-average basic shares outstanding | 25,741,968 | 17,180,000 | 24,944,633 | 17,180,000
Basic earnings per share | $ 0.44 | $ 0.92 | $ 0.84 | $ 1.77
Diluted earnings per share: |  |  |  |
Net income | $ 11,239 | $ 15,775 | $ 20,992 | $ 30,374
Weighted-average basic shares outstanding | 25,741,968 | 17,180,000 | 24,944,633 | 17,180,000
Average diluted common shares outstanding | 559,490 | 0 | 505,786 | 0
Weighted-average diluted shares outstanding | 26,301,458 | 17,180,000 | 25,450,419 | 17,180,000
Diluted earnings per share | $ 0.43 | $ 0.92 | $ 0.82 | $ 1.77
Pro forma earnings per share: |  |  |  |
Pro forma net income | $ 11,239 | $ 10,576 | $ 20,992 | $ 20,379
Weighted-average basic shares outstanding | 25,741,968 | 17,180,000 | 24,944,633 | 17,180,000
Pro forma basic earnings per share | $ 0.44 | $ 0.62 | $ 0.84 | $ 1.19
Pro forma diluted earnings per share: |  |  |  |
Pro forma net income | $ 11,239 | $ 10,576 | $ 20,992 | $ 20,379
Weighted-average diluted shares outstanding | 26,301,458 | 17,180,000 | 25,450,419 | 17,180,000
Pro forma diluted earnings per share | $ 0.43 | $ 0.62 | $ 0.82 | $ 1.19

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