Consolidated Balance Sheets Parentheticals (USD $)	Dec. 31, 2012	Dec. 31, 2011
Preferred stock, par value per share	$ 0.001	$ 0.001
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value per share	$ 0.001	$ 0.001
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	49,160,844	42,928,001
Common stock, shares outstanding	49,160,844	42,928,001
Treasury stock, shares	1,129,408	0