Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, authorized shares	5,000,000	5,000,000
Preferred stock, issued shares
Preferred stock, outstanding shares
Common stock, par value	$ 0.001	$ 0.001
Common stock, authorized shares	50,000,000	50,000,000
Common stock, issued shares	21,555,318	22,501,644
Common stock, outstanding shares	21,555,318	22,501,644