CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,000,000	3,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	170,000,000	170,000,000
Common stock, shares issued	48,292,702	58,817,561
Common stock, shares outstanding	48,292,702	58,817,561