Note 10 - Per Share Data (Details) - Weighted Average Number of Common Shares	3 Months Ended		9 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 28, 2013	Sep. 29, 2012
Weighted Average Number of Common Shares [Abstract]
Basic weighted average shares outstanding	12,364,018	12,057,478	12,333,318	12,422,558
Dilutive effect of outstanding stock options	123,400	194,731	98,143	205,140
Weighted average dilutive shares outstanding	12,487,418	12,252,209	12,431,461	12,627,698