Note 10 - Weighted Average Number of Common Shares (Details) - shares	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Basic weighted average shares outstanding (in shares)	12,363,811	12,711,660	12,423,179	12,710,404
Dilutive effect of outstanding stock options and restricted stock awards (in shares)	101,924	233,493	84,963	222,306
Weighted average dilutive shares outstanding (in shares)	12,465,735	12,945,153	12,508,142	12,932,710