CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical)	Mar. 31, 2013	Dec. 31, 2012
Voting Shares [Member]
Common Stock, Shares, Issued	4	3
Common shares outstanding (in shares)	4	3
Listed Shares [Member]
Common Stock, Shares, Issued	116,922,930	115,118,335
Common shares outstanding (in shares)	116,922,930	115,118,335