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Note 9 - Long-Term Debt (Details Textual)
3 Months Ended 6 Months Ended
Apr. 02, 2016
USD ($)
Mar. 28, 2015
USD ($)
Apr. 02, 2016
USD ($)
Mar. 28, 2015
USD ($)
Oct. 03, 2015
USD ($)
Feb. 06, 2012
USD ($)
Revolving Credit Facility [Member] | Letter of Credit [Member]            
Long-term Line of Credit $ 1,600,000   $ 1,600,000      
Revolving Credit Facility [Member] | Federal Funds Effective Swap Rate [Member]            
Debt Instrument, Basis Spread on Variable Rate     0.50%      
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate     0.25%      
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate     0.75%      
Revolving Credit Facility [Member] | Base Rate [Member]            
Line of Credit Facility, Interest Rate at Period End 0.25%   0.25%      
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]            
Debt Instrument, Basis Spread on Variable Rate     1.25%      
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]            
Debt Instrument, Basis Spread on Variable Rate     1.75%      
Revolving Credit Facility [Member] | London Interbank Offered Rate (LIBOR) [Member]            
Line of Credit Facility, Interest Rate at Period End 1.25%   1.25%      
Revolving Credit Facility [Member]            
Line of Credit Facility, Maximum Borrowing Capacity           $ 100,000,000
Line of Credit Facility, Current Borrowing Capacity $ 100,000,000   $ 100,000,000      
Long-term Line of Credit 0   0      
Line of Credit Facility, Remaining Borrowing Capacity 77,000,000   $ 77,000,000      
Debt Instrument, Interest Rate, Increase (Decrease)     2.00%      
Fixed Charge Coverage Ratio     1.1      
Credit Facility Liquidity Amount     $ 12,500,000      
Amortization of Financing Costs 16,000 $ 26,000 32,000 $ 51,000    
Amortization of Financing Costs     32,000 $ 51,000    
Accumulated Amortization, Deferred Finance Costs $ 4,500,000   $ 4,500,000   $ 4,500,000