Earnings Per Share (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

	Three Months Ended		Six Months Ended
	June 30,		June 30,
	2017	2016	2017	2016
Weighted average shares outstanding - basic	82,318,623	83,354,013	82,333,739	83,668,521
Dilutive effect of share-based awards	109,352	27,416	102,431	13,707
Weighted average shares outstanding - diluted	82,427,975	83,381,429	82,436,170	83,682,228