Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $)	Jun. 30, 2013	Dec. 31, 2012
Preferred stock, shares authorized	25,000,000	25,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Preferred stock, par value (in Dollars per share)	$ 0	$ 0
Common stock, par value (in Dollars per share)	$ 0	$ 0
Common stock, shares authorized	250,000,000	250,000,000
Common stock, shares issued	117,813,000	116,932,000
Common stock, shares outstanding	117,813,000	116,932,000