Note 10 - Weighted Average Number of Common Shares (Details) - shares	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Basic weighted average shares outstanding (in shares)	12,711,660	12,488,420	12,710,404	12,471,712
Dilutive effect of outstanding stock options and restricted stock awards (in shares)	233,493	189,552	222,306	186,686
Weighted average dilutive shares outstanding (in shares)	12,945,153	12,677,972	12,932,710	12,658,398