Quarterly report pursuant to Section 13 or 15(d)

Earnings per Share - Reconciliation from Basic to Diluted Weighted Average Shares Outstanding (Details)

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Earnings per Share - Reconciliation from Basic to Diluted Weighted Average Shares Outstanding (Details) - shares
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Earnings Per Share [Abstract]    
Weighted average shares outstanding – Basic (shares) 133,154,144 103,947,888
Dilutive effect of unvested common shares with service conditions and assumed stock option exercises and conversions (shares) 730,839 0
Weighted average shares outstanding – Diluted (shares) 133,884,983 103,947,888