CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) (USD $)	Sep. 30, 2011	Dec. 31, 2010
Stockholders' equity:
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, authorized	20,000,000	20,000,000
Preferred stock, issued	0	0
Preferred stock, outstanding	0	0
Common stock, par value	$ 0.0013	$ 0.0013
Common stock, authorized	80,000,000	80,000,000
Common stock, issued	33,957,003	33,325,802
Common stock, outstanding	33,757,003	33,125,802
Treasury stock, shares	200,000	200,000