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Note 7 - Income Taxes (Details Textual) - USD ($)
 3 Months Ended
Dec. 31, 2016
Jan. 02, 2016
Oct. 01, 2016
Effective Income Tax Rate Reconciliation, Percent 33.70% 34.60%  
Deferred Tax Liabilities, Net, Noncurrent $ 6,659,000   $ 5,472,000
Operating Loss Carryforwards 7,500,000    
Deferred Tax Assets, Valuation Allowance 280,000   $ 280,000
State and Local Jurisdiction [Member]      
Deferred Tax Assets, Tax Credit Carryforwards $ 87,000    
State and Local Jurisdiction [Member] | Earliest Tax Year [Member]      
Operating Loss Carryforwards Expiration Date 1 2017    
Tax Credit Carryforward, Expiration Date 1 2018    
State and Local Jurisdiction [Member] | Latest Tax Year [Member]      
Operating Loss Carryforwards Expiration Date 1 2031    
Tax Credit Carryforward, Expiration Date 1 2020