Note 3 - Fair Value Measurements (Details) (USD $)	3 Months Ended		6 Months Ended			6 Months Ended
	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013	Sep. 23, 2012	Mar. 31, 2013	Jun. 30, 2013 Privately-Owned Company [Member]
Note 3 - Fair Value Measurements (Details) [Line Items]
Cost Method Investment Ownership Percentage	2.50%	2.50%	2.50%	2.50%
Long-term Investments	$ 100,000	$ 500,000	$ 100,000	$ 500,000	$ 500,000
Assets	52,281,000		52,281,000		49,662,000	1,734,000
Stockholders' Equity Attributable to Parent	41,696,000		41,696,000		34,148,000	289,000
Revenues	23,662,000	21,360,000	47,063,000	41,542,000		297,000
Net Income (Loss) Attributable to Parent	$ 2,648,000	$ 2,845,000	$ 6,002,000	$ 4,851,000		$ 1,456,000