Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Preferred shares, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred shares, shares authorized (in Shares)	10,000	10,000
Preferred shares, shares issued (in Shares)	0	0
Preferred shares, shares outstanding (in Shares)	0	0
Common shares, par value (in Dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized (in Shares)	100,000	100,000
Common shares, shares issued (in Shares)	23,831	23,779
Treasury shares, at cost, shares (in Shares)	9,180	9,124