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Note 6 - Long-Term Investment (Details) (USD $)
3 Months Ended
Jul. 01, 2012
Jun. 30, 2013
Mar. 31, 2013
Dec. 30, 2012
Note 6 - Long-Term Investment (Details) [Line Items]        
Long-term Investments   $ 1,288,000 $ 1,288,000 $ 1,273,000
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures     15,000  
Non Marketable Equity Investment In Fund Contributions 15,000      
Skypoint Fund [Member]
       
Note 6 - Long-Term Investment (Details) [Line Items]        
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures   $ 4,800,000