Consolidated Balance Sheets Parentheticals (USD $)	Dec. 31, 2011	Dec. 31, 2010
Preferred stock, no par value	$ 0	$ 0
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	$ 0
Common stock, shares authorized	160,000,000	160,000,000
Common stock, shares issued	75,362,956	75,316,419
Common stock, shares outstanding	75,362,956	75,316,419