Weighted Average Common Shares (Tables)

6 Months Ended

Jun. 30, 2017

Earnings Per Share [Abstract]

Schedule of Weighted Average Number of Shares

The following table provides a reconciliation of the weighted average number of common shares used in the calculation of basic and diluted earnings per share (in thousands): 

	Three Months Ended June 30,		Six Months Ended June 30,
	2017	2016	2017	2016
Weighted average common shares for basic earnings per share	237,399	237,325	237,395	237,320
Effect of dilutive securities: unvested share awards	46	38	38	29
Weighted average common shares for diluted earnings per share	237,445	237,363	237,433	237,349