Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Common stock, no par value
Common Stock, Authorized shares	150,000,000	150,000,000
Common Stock, Issued shares	112,639,301	109,823,748
Common Stock, outstanding shares	112,639,301	109,823,748