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Capital Stock (Schedule Of Common Shares Issued And Outstanding) (Details)	1 Months Ended	12 Months Ended
	Mar. 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Aug. 31, 2012	Apr. 30, 2012
Capital Stock [Abstract]
Common shares issued and outstanding, Beginning balance (in shares)		71,503,883
Exercises of compensation options (in shares)	225,000	225,000
Exercises of compensation warrants (in shares)				115,217	478,261
Compensation options exercised, shares		32,500	354,984
Common shares issued and outstanding, Ending balance (in shares)		81,563,498	71,503,883

Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

Number of share options (or share units) exercised during the current period.