Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2015	Dec. 31, 2014
Common stock par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	33,269,681	32,836,930
Treasury stock, at cost (in shares)	1,738,624	1,738,624