Per Common Share Amounts

3 Months Ended

Mar. 31, 2015

Per Common Share Amounts

Per Common Share Amounts

Note 12. Weighted Average Per Common Share Amounts

We calculate basic earnings per common share by dividing net income by the weighted average number of common shares outstanding during the period. We calculate diluted earnings per common share by using the more dilutive of the two class method or the treasury stock method. Unvested share awards and other potentially dilutive common shares, including contingently issuable common shares under our business management agreement with RMR, if any, and the related impact on earnings, are considered when calculating diluted earnings per share. 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,
	2015		2014
Weighted average common shares for basic earnings per share		221,375		188,026
Effect of dilutive securities: unvested share awards		22		19
Weighted average common shares for diluted earnings per share		221,397		188,045