Note 3 - Net Income Per Common Share (Details) - Reconciliation of Denominators Used in Computation of Net Income per Common Share - shares shares in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Reconciliation of Denominators Used in Computation of Net Income per Common Share [Abstract]
Weighted shares of common stock outstanding - basic	5,750	5,655	5,746	5,648
Dilutive impact of share-based awards	96	120	94	122
Weighted shares of common stock outstanding - diluted	5,846	5,775	5,840	5,770