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Acquisitions - Narrative (Details) $ in Thousands			12 Months Ended			18 Months Ended
	Mar. 16, 2020 USD ($) property newspaper printProduct	Dec. 29, 2019 USD ($)	Sep. 25, 2022 USD ($)	Sep. 26, 2021 USD ($)	Sep. 27, 2020 USD ($)	Sep. 26, 2021 USD ($)
Business Acquisition [Line Items]
Operating lease right-of-use assets			$ 47,490	$ 65,682		$ 65,682
Present value of lease liabilities			53,862
Net income			(2,017)	$ 22,745	$ (1,975)
BHMG
Business Acquisition [Line Items]
Combined purchase price	$ 140,000
Number of daily newspapers and digital operations | newspaper	30
Number of paid weekly newspapers with websites | newspaper	49
Number of other print products | printProduct	32
Business combination, termination of contract, credits	$ 5,425
Business combination, termination of contract, credits, pro-rated fixed portion	1,245
Business combination, termination of contract, credit, pro-rated variable fees	$ 4,180
Settlement of existing contract asset balance		$ 3,589
Number of leased properties | property	68
Annual rent	$ 8,000
Percentage of net consideration	8.00%
Amount of monthly rent credits			166
Amount of current annual rent			$ 6,004
Operating lease right-of-use assets	$ 56,226
Present value of lease liabilities	$ 56,226
Business combination accrued liabilities adjustment						(634)
Business combination uncertain tax position allowance adjustment						(138)
Business combination workers compensation and medical reserve adjustment						(3,600)
BHMG | Advertiser relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						(11,160)
BHMG | Subscriber relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						(8,210)
BHMG | Commercial print relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						2,430
BHMG | Acquisition-related costs
Business Acquisition [Line Items]
Net income					$ 8,973
BHMG | Revision of prior period, adjustment | Advertiser relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						(11,160)
BHMG | Revision of prior period, adjustment | Subscriber relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						(8,210)
BHMG | Revision of prior period, adjustment | Commercial print relationships
Business Acquisition [Line Items]
Measurement period adjustments, intangibles						$ 2,430

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