Weighted Average Common Shares (Tables)

3 Months Ended

Mar. 31, 2019

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 March 31,
	2019	2018
Weighted average common shares for basic earnings per share	237,568	237,478
Effect of dilutive securities: unvested share awards	32	15
Weighted average common shares for diluted earnings per share	237,600	237,493