Goodwill and Other Intangible Assets - Narrative (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Sep. 25, 2022 USD ($)	Dec. 26, 2021 USD ($)	Sep. 25, 2022 USD ($)	Sep. 26, 2021 USD ($)	Sep. 27, 2020 USD ($)	Mar. 29, 2020 USD ($)	Mar. 16, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Impairment, Intangible Asset, Finite-Lived, Statement of Income or Comprehensive Income [Extensible Enumeration]			Gain (Loss) on Disposition of Property Plant Equipment
Goodwill attributable to the disposition of non-core operation			$ 700	$ 0
Decrease in royalty rates	5000.00%		5000.00%
Non-amortized intangible assets			$ 14,203	787	$ 972
Increase in discount rate	10000.00%		10000.00%
Amortization expense			$ 22,180	24,859	20,748
Annual amortization of intangible assets, year one	$ 19,370		19,370
Annual amortization of intangible assets, year two	16,623		16,623
Annual amortization of intangible assets, year three	10,917		10,917
Annual amortization of intangible assets, year four	7,040		7,040
Annual amortization of intangible assets, year five	5,072		$ 5,072
Weighted average amortization period (in years)			12 years 6 months
Goodwill	329,504		$ 329,504	$ 330,204	$ 328,445		$ 79,896
Amount of Goodwill expected to be tax deductible	$ 42,442		42,442
Estimating Using Royalty Rate
Finite-Lived Intangible Assets [Line Items]
Non-amortized intangible assets			6,992
Estimating Using Discount Rate
Finite-Lived Intangible Assets [Line Items]
Non-amortized intangible assets			$ 257
Minimum | Measurement Input, Royalty Rate
Finite-Lived Intangible Assets [Line Items]
Intangible assets, measurement input	0.000		0.000
Minimum | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Intangible assets, measurement input	0.0950		0.0950
Maximum | Measurement Input, Royalty Rate
Finite-Lived Intangible Assets [Line Items]
Intangible assets, measurement input	0.015		0.015
Maximum | Measurement Input, Discount Rate
Finite-Lived Intangible Assets [Line Items]
Intangible assets, measurement input	0.1100		0.1100	0.1050
Customer and Newspaper Subscriber Lists
Finite-Lived Intangible Assets [Line Items]
Write off of gross cost and accumulated amortization	$ 251,100	$ 199,900
Non-Compete and Consulting Agreements
Finite-Lived Intangible Assets [Line Items]
Write off of gross cost and accumulated amortization		$ 28,700
BHMG
Finite-Lived Intangible Assets [Line Items]
Goodwill				$ 79,896		$ 63,559
BHMG | Mastheads
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived masthead assets	20,390		$ 20,390	20,390		21,680
BHMG | Advertiser relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles	27,620		27,620	27,620		38,780
BHMG | Subscriber relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles	27,850		27,850	27,850		36,060
BHMG | Commercial print relationships
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangibles	$ 19,560		$ 19,560	$ 19,560		$ 17,130