CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Dec. 31, 2012	Dec. 31, 2011
Common shares, par value (in dollars per share)	$ 0.001	$ 0.001
Common shares, authorized (in shares)	100,000,000	100,000,000
Common shares, issued (in shares)	52,482,598	42,586,376
Common shares, outstanding (in shares)	52,482,598	42,586,376