Capital Stock (Tables)

3 Months Ended

Mar. 31, 2016

Equity [Abstract]

Capital Stock

The following is a schedule of changes in the number of common shares outstanding since the beginning of 2015:

	Three Months Ended March 31, 2016		Year Ended December 31, 2015
Beginning balance		169,316,460		168,628,177
SARs exercised		—		77,002
Restricted stock grants		132,237		335,103
Restricted stock units vested		238,238		252,507
Treasury shares issued		9,720		23,671
Ending balance		169,696,655		169,316,460