Revenue - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 24, 2023	Sep. 25, 2022	Sep. 26, 2021
Operating revenue:
Operating revenue	$ 691,138	$ 780,969	$ 794,649
Advertising and marketing services revenue
Operating revenue:
Operating revenue	318,977	366,428	369,283
Advertising and marketing services revenue | Print
Operating revenue:
Operating revenue	125,804	184,963	227,892
Advertising and marketing services revenue | Digital
Operating revenue:
Operating revenue	193,173	181,465	141,391
Subscription Revenue
Operating revenue:
Operating revenue	313,291	353,624	357,713
Subscription Revenue | Print
Operating revenue:
Operating revenue	252,591	313,504	329,484
Subscription Revenue | Digital
Operating revenue:
Operating revenue	60,700	40,120	28,229
Other revenue
Operating revenue:
Operating revenue	58,870	60,917	67,653
Other revenue | Print
Operating revenue:
Operating revenue	39,508	42,962	48,656
Other revenue | Digital
Operating revenue:
Operating revenue	$ 19,362	$ 17,955	$ 18,997