Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Preferred shares, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred shares, shares authorized	10,000	10,000
Preferred shares, shares issued	0	0
Preferred shares, shares outstanding	0	0
Common shares, par value (in Dollars per share)	$ 0.01	$ 0.01
Common shares, shares authorized	100,000	100,000
Common shares, shares issued	23,198	23,153
Treasury shares, at cost, shares	7,998	7,982