Note 10 - Per Share Data (Details) - Weighted Average Number of Common Shares	3 Months Ended		9 Months Ended
	Sep. 27, 2014	Sep. 28, 2013	Sep. 27, 2014	Sep. 28, 2013
Weighted Average Number of Common Shares [Abstract]
Basic weighted average shares outstanding	12,540,955	12,364,018	12,494,793	12,333,318
Dilutive effect of outstanding stock options	217,850	123,400	198,036	98,143
Weighted average dilutive shares outstanding	12,758,805	12,487,418	12,692,829	12,431,461