Consolidated Balance Sheets (Parenthetical) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Consolidated Balance Sheets [Abstract]
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	75,000,000	45,000,000
Common Stock, shares issued	29,577,146	24,038,445
Common Stock, shares outstanding	29,561,655	24,022,954
Treasury stock, shares	15,491	15,491
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares outstanding	0	0