Consolidated Balance Sheets (Unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Preferred stock par value (in Dollars per share)	$ 0.00001	$ 0.00001
Preferred stock, shares authorized	25,000	25,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value (in Dollars per share)	$ 0.00001	$ 0.00001
Common stock, shares authorized	100,000	100,000
Common stock, shares issued	33,622	33,500
Common stock, shares outstanding	33,622	33,500