Note 3 - Reconciliation of Denominators Used in Computation of Net Income per Common Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Basic (in shares)	5,753	5,668	5,748	5,655
Dilutive impact of share-based awards (in shares)	55	108	78	113
Diluted (in shares)	5,808	5,776	5,826	5,768