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INVESTMENTS IN ASSOCIATED COMPANIES - Summarized Financial Results (Details) - USD ($)
$ in Thousands
 3 Months Ended
Dec. 28, 2025
Dec. 29, 2024
Schedule of Equity Method Investments [Line Items]    
Operating revenue $ 130,062 $ 144,562
Operating expenses, excluding restructuring costs, depreciation and amortization 125,934 149,036
Restructuring costs 3,148 5,150
Depreciation and amortization 3,579 6,265
Operating income 5,208 (3,352)
Net income (5,611) (16,748)
Equity in earnings of associated companies 1,080 1,122
TNI Partners    
Schedule of Equity Method Investments [Line Items]    
Operating revenue 4,814 6,533
Operating expenses, excluding restructuring costs, depreciation and amortization 3,605 5,206
Operating income 1,209 1,327
MNI    
Schedule of Equity Method Investments [Line Items]    
Operating revenue 9,470 9,759
Operating expenses, excluding restructuring costs, depreciation and amortization 7,233 7,455
Restructuring costs 34 0
Depreciation and amortization 60 90
Operating income 2,143 2,214
TNI Partners    
Schedule of Equity Method Investments [Line Items]    
Net income 1,260 1,250
Equity in earnings of associated companies 630 625
MNI    
Schedule of Equity Method Investments [Line Items]    
Net income 900 994
Equity in earnings of associated companies $ 450 $ 497