Capital Stock (Tables)

6 Months Ended

Jun. 30, 2015

Equity [Abstract]

Capital Stock

The following is a schedule of changes in the number of common shares outstanding since the beginning of 2014:

	Six Months Ended June 30, 2015		Year Ended December 31, 2014
Beginning balance		168,628,177		163,342,894
Equity offering		—		4,560,000
SARs exercised		76,989		195,242
Restricted stock grants		324,294		270,062
Restricted stock units vested		243,601		244,413
Treasury shares issued		20,443		15,566
Ending balance		169,293,504		168,628,177