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 income	196,400	$ 196,400
Other comprehensive income	588		588
Partnership distributions	(40,789)	(40,789)
Common Units issued under Restricted Unit Plans	(2,080)	$ (2,080)
Common Units issued under Restricted Unit Plans (in units)		430
Compensation costs recognized under Restricted Unit Plans	5,609	$ 5,609
Balance, end of period at Mar. 26, 2022	585,149	$ 602,145	(16,996)
Balance (in units) at Mar. 26, 2022		62,968
Balance, beginning of period at Dec. 25, 2021	427,348	$ 444,638	(17,290)
Balance (in units) at Dec. 25, 2021		62,964
Net income	175,102	$ 175,102
Other comprehensive income	294		294
Partnership distributions	(20,464)	(20,464)
Common Units issued under Restricted Unit Plans	(31)	$ (31)
Common Units issued under Restricted Unit Plans (in units)		4
Compensation costs recognized under Restricted Unit Plans	2,900	$ 2,900
Balance, end of period at Mar. 26, 2022	585,149	$ 602,145	(16,996)
Balance (in units) at Mar. 26, 2022		62,968
Balance, beginning of period at Sep. 24, 2022	497,530	$ 510,126	(12,596)
Balance (in units) at Sep. 24, 2022		62,987
Net income	149,871	$ 149,871
Other comprehensive income	327		327
Partnership distributions	(41,105)	(41,105)
Common Units issued under Restricted Unit Plans	(2,732)	$ (2,732)
Common Units issued under Restricted Unit Plans (in units)		503
Compensation costs recognized under Restricted Unit Plans	4,360	$ 4,360
Balance, end of period at Mar. 25, 2023	608,251	$ 620,520	(12,269)
Balance (in units) at Mar. 25, 2023		63,490
Balance, beginning of period at Dec. 24, 2022	522,356	$ 534,788	(12,432)
Balance (in units) at Dec. 24, 2022		63,486
Net income	104,477	$ 104,477
Other comprehensive income	163		163
Partnership distributions	(20,634)	$ (20,634)
Common Units issued under Restricted Unit Plans	0
Common Units issued under Restricted Unit Plans (in units)		4
Compensation costs recognized under Restricted Unit Plans	1,889	$ 1,889
Balance, end of period at Mar. 25, 2023	$ 608,251	$ 620,520	$ (12,269)
Balance (in units) at Mar. 25, 2023		63,490