CONDENSED CONSOLIDATED STATEMENTS OF PARTNERS' CAPITAL (unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Unitholders [Member]	Accumulated Other Comprehensive (Loss) [Member]
Balance, beginning of period at Sep. 25, 2021	$ 425,421	$ 443,005	$ (17,584)
Balance (in units) at Sep. 25, 2021		62,538
Net (loss) income	193,865	$ 193,865
Other comprehensive income	1,515		1,515
Partnership distributions	(61,255)	(61,255)
Common Units issued under Restricted Unit Plans	(2,115)	$ (2,115)
Common Units issued under Restricted Unit Plans (in units)		437
Compensation costs recognized under Restricted Unit Plans	8,422	$ 8,422
Balance, end of period at Jun. 25, 2022	565,853	$ 581,922	(16,069)
Balance (in units) at Jun. 25, 2022		62,975
Balance, beginning of period at Mar. 26, 2022	585,149	$ 602,145	(16,996)
Balance (in units) at Mar. 26, 2022		62,968
Net (loss) income	(2,535)	$ (2,535)
Other comprehensive income	927		927
Partnership distributions	(20,466)	(20,466)
Common Units issued under Restricted Unit Plans	(35)	$ (35)
Common Units issued under Restricted Unit Plans (in units)		7
Compensation costs recognized under Restricted Unit Plans	2,813	$ 2,813
Balance, end of period at Jun. 25, 2022	565,853	$ 581,922	(16,069)
Balance (in units) at Jun. 25, 2022		62,975
Balance, beginning of period at Sep. 24, 2022	497,530	$ 510,126	(12,596)
Balance (in units) at Sep. 24, 2022		62,987
Net (loss) income	144,610	$ 144,610
Other comprehensive income	491		491
Partnership distributions	(61,741)	(61,741)
Common Units issued under Restricted Unit Plans	(2,732)	$ (2,732)
Common Units issued under Restricted Unit Plans (in units)		512
Compensation costs recognized under Restricted Unit Plans	6,265	$ 6,265
Balance, end of period at Jun. 24, 2023	584,423	$ 596,528	(12,105)
Balance (in units) at Jun. 24, 2023		63,499
Balance, beginning of period at Mar. 25, 2023	608,251	$ 620,520	(12,269)
Balance (in units) at Mar. 25, 2023		63,490
Net (loss) income	(5,261)	$ (5,261)
Other comprehensive income	164		164
Partnership distributions	(20,636)	$ (20,636)
Common Units issued under Restricted Unit Plans	0
Common Units issued under Restricted Unit Plans (in units)		9
Compensation costs recognized under Restricted Unit Plans	1,905	$ 1,905
Balance, end of period at Jun. 24, 2023	$ 584,423	$ 596,528	$ (12,105)
Balance (in units) at Jun. 24, 2023		63,499