Note 3 - Share Information (Details) - Earnings Per Share Calculation, Share Information	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share Calculation, Share Information [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	200,665	159,639	200,665	159,639
Weighted average number of common shares used for basic EPS	37,406,061	38,672,441	37,752,472	38,836,276
Effect of dilutive stock options and restricted and deferred stock unit awards	0	398,932	360,317	392,349
Weighted average number of common shares and dilutive potential common stock used in dilutive EPS	37,406,061	39,071,373	38,112,789	39,228,625