Note 11 - Revolving Credit Facility (Details) (USD $)	3 Months Ended		12 Months Ended
	Sep. 28, 2013	Dec. 29, 2012	Sep. 28, 2013	Sep. 29, 2012	Oct. 01, 2011	Dec. 31, 2012
Note 11 - Revolving Credit Facility (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 10,000,000		$ 10,000,000
Line of Credit Facility, Interest Rate at Period End						1.0635%
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage (in Basis Points)			0.25%
Line of Credit Facility, Unused Borrowing Capacity Threshold			5,000,000
Line of Credit Facility, Dividend and Stock Repurchases Restrictions, Percentage			50.00%
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)		$ 1.00
Stock Repurchased During Period, Shares (in Shares)	25,000
Interest Expense			15,196	20,861	0
Line of Credit Facility, Amount Outstanding	$ 0		$ 0	$ 0
Minimum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 11 - Revolving Credit Facility (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate (in Basis Points)			0.85%
Maximum [Member] | London Interbank Offered Rate (LIBOR) [Member]
Note 11 - Revolving Credit Facility (Details) [Line Items]
Debt Instrument, Basis Spread on Variable Rate (in Basis Points)			1.65%