Note 9 - Fair Value of Assets and Liabilities (Details) - Assets Measured at Fair Value (USD $) In Thousands, unless otherwise specified	Dec. 28, 2013	Dec. 29, 2012
Note 9 - Fair Value of Assets and Liabilities (Details) - Assets Measured at Fair Value [Line Items]
Available-for-sale securities	$ 12,286	$ 10,327
Investment in unconsolidated affiliate		8,666
Total	12,286	18,993
Fair Value, Inputs, Level 1 [Member]
Note 9 - Fair Value of Assets and Liabilities (Details) - Assets Measured at Fair Value [Line Items]
Available-for-sale securities	12,286	10,327
Total	12,286	10,327
Fair Value, Inputs, Level 3 [Member]
Note 9 - Fair Value of Assets and Liabilities (Details) - Assets Measured at Fair Value [Line Items]
Investment in unconsolidated affiliate		8,666
Total		$ 8,666