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Note 1 - Significant Accounting Policies (Details Textual)
2 Months Ended 3 Months Ended 12 Months Ended
Feb. 25, 2021
Mar. 16, 2020
USD ($)
Dec. 10, 2021
USD ($)
Dec. 26, 2021
USD ($)
Sep. 26, 2021
USD ($)
shares
Sep. 27, 2020
USD ($)
Sep. 29, 2019
USD ($)
Nov. 24, 2021
$ / shares
Jan. 29, 2020
USD ($)
[1]
Revenue from Contract with Customer, Including Assessed Tax         $ 794,649,000 $ 618,004,000 $ 509,854,000    
Proceeds from (Payment for) Pension Benefits         (965,000) (6,215,000) (650,000)    
Increase (Decrease) in Obligation, Pension and Other Postretirement Benefits, Total         (2,667,000) (2,950,000) 1,900,000    
Repayments of Long-term Debt, Total         (0) 443,627,000 41,832,000    
Inventory, LIFO Reserve         988,000 942,000      
Goodwill, Ending Balance   $ 79,896,000     $ 330,204,000 328,445,000 250,309,000    
Decrease in Royalty Rates         0.50%        
Increase in Discount Rate         1.00%        
Forecasted Revenue, Decrease Percentage         1.00%        
Long Term Growth Rates, Decrease Percentage         1.00%        
Class of Warrant or Right, Outstanding (in shares) | shares         600,000        
Cash Collateral for Insurance         $ 4,711,000        
Operating Lease, Right-of-Use Asset         65,682,000 70,933,000      
Operating Lease, Liability, Current         8,612,000 8,577,000      
Operating Lease, Liability, Noncurrent         $ 57,683,000 62,374,000      
Accounting Standards Update 2016-02 [Member]                  
Operating Lease, Right-of-Use Asset           10,709,000      
Operating Lease, Liability, Current           2,281,000      
Operating Lease, Liability, Noncurrent           8,353,000      
Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)         1 year        
Minimum [Member] | Measurement Input, Royalty Rate [Member]                  
Intangible Assets, Measurement Input         0.010        
Minimum [Member] | Measurement Input, Discount Rate [Member]                  
Intangible Assets, Measurement Input         0.0950        
Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year)         4 years        
Maximum [Member] | Measurement Input, Royalty Rate [Member]                  
Intangible Assets, Measurement Input         0.015        
Maximum [Member] | Measurement Input, Discount Rate [Member]                  
Intangible Assets, Measurement Input         0.1150        
BHMG [Member]                  
Goodwill, Ending Balance         $ 79,896,000       $ 63,559,000
Operating Lease, Right-of-Use Asset   $ 56,226,000              
Leasehold Improvements [Member] | Minimum [Member]                  
Property, Plant and Equipment, Useful Life (Year)         3 years        
Leasehold Improvements [Member] | Maximum [Member]                  
Property, Plant and Equipment, Useful Life (Year)         10 years        
Leasehold Improvements [Member] | BHMG [Member] | Minimum [Member]                  
Property, Plant and Equipment, Useful Life (Year)   3 years              
Forecast [Member] | Credit Agreement [Member]                  
Repayments of Long-term Debt, Total       $ 10,430,000          
Estimating Using Royalty Rate [Member]                  
Impairment of Intangible Assets, Finite-lived         $ 9,816,000        
Estimating Using Discount Rate [Member]                  
Impairment of Intangible Assets, Finite-lived         1,075,000        
Estimating Based on Revenue Forecast [Member]                  
Impairment of Intangible Assets, Finite-lived         674,000        
Estimating Based on Long Term Growth Rates [Member]                  
Impairment of Intangible Assets, Finite-lived         26,000        
Subsequent Event [Member]                  
Proceeds from Sale of Buildings     $ 14,480,000            
Subsequent Event [Member] | Rights Agreement [Member]                  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares               $ 120.00  
Reverse Stock Split [Member]                  
Stockholders' Equity Note, Stock Split, Conversion Ratio 10                
Subscription and Circulation [Member]                  
Revenue from Contract with Customer, Including Assessed Tax         357,713,000 268,285,000 187,443,000    
Subscription and Circulation [Member] | Reclassified Other Revenue to Subscription Revenue [Member]                  
Revenue from Contract with Customer, Including Assessed Tax         828,000 2,346,000 752,000    
Product and Service, Other [Member]                  
Revenue from Contract with Customer, Including Assessed Tax         67,653,000 60,064,000 56,478,000    
Product and Service, Other [Member] | Reclassified Other Revenue to Subscription Revenue [Member]                  
Revenue from Contract with Customer, Including Assessed Tax         $ (828,000) (2,346,000) $ (752,000)    
TNI Partners [Member]                  
Noncontrolling Interest, Ownership Percentage by Parent         50.00%        
Goodwill, Ending Balance           $ 12,366,000      
MNI [Member]                  
Noncontrolling Interest, Ownership Percentage by Parent         50.00%        
INN Partners, L.C. [Member]                  
Noncontrolling Interest, Ownership Percentage by Parent         82.50%        
[1] As previously reported in the Company's Quarterly Report on Form 10-Q for the period ended March 29, 2020.