Immaterial Corrections to Prior Period Financial Statements - Consolidated Balance Sheets (Details) - USD ($) $ in Thousands	Sep. 25, 2022	Jun. 26, 2022	Mar. 27, 2022	Dec. 26, 2021	Sep. 26, 2021	Sep. 27, 2020	Sep. 29, 2019
Liabilities
Deferred income taxes	$ 42,719	$ 50,763	$ 51,865	$ 52,425	$ 53,763	$ 28,636
Total liabilities	726,805	753,689	753,500	782,212	800,321	907,118
Accumulated deficit	(261,229)	(254,099)	(253,830)	(246,554)	(259,212)	(281,957)
Total stockholders' equity (deficit)	15,005	41,147	39,481	47,444	41,097	(44,992)
Total equity (deficit)	17,237	41,147	41,901	49,637	43,230	(43,061)
Total liabilities and stockholders' equity	$ 744,042	794,836	795,401	831,849	843,551	864,057
As previously reported
Liabilities
Deferred income taxes		37,295	38,397	38,957	40,295	15,208
Total liabilities		740,221	740,032	768,744	786,853	893,690
Accumulated deficit		(240,631)	(240,362)	(233,086)	(245,744)	(268,529)
Total stockholders' equity (deficit)		52,391	53,129	60,912	54,565	(31,564)
Total equity (deficit)		54,615	55,369	63,105	56,698	(29,633)
Total liabilities and stockholders' equity		794,836	795,401	831,849	843,551	864,057
Adjustment
Liabilities
Deferred income taxes		13,468	13,468	13,468	13,468	13,428	$ 14,559
Total liabilities		13,468	13,468	13,468	13,468	13,428
Accumulated deficit		(13,468)	(13,468)	(13,468)	(13,468)	(13,428)	$ (14,559)
Total stockholders' equity (deficit)		(13,468)	(13,648)	(13,468)	(13,468)	(13,428)
Total equity (deficit)		(13,468)	(13,468)	(13,468)	(13,468)	(13,428)
Total liabilities and stockholders' equity		$ 0	$ 0	$ 0	$ 0	$ 0