Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jun. 30, 2011	Dec. 31, 2010
Preferred stock, no par value	$ 0.00	$ 0.00
Preferred stock, shares authorized	30,000,000	30,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, no par value	$ 0.00	$ 0.00
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	75,341,104	75,316,419
Common stock, shares outstanding	75,341,104	75,316,419