Share Capital (Tables)

3 Months Ended

Mar. 31, 2013

Stockholders' Equity Note [Abstract]

Changes in share capital

Changes in share capital during the three months ended March 31, 2013, are as follows:

	Shares	Amount
Balance at December 31, 2012	259,015,970	$	694,652
Common shares issued:
Option exercises	90,000	254
Balance at March 31, 2013	259,105,970	$	694,906