Restatement of Previously Issued Consolidated Financial Statements - Cash Flows Statement Restatement (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	9 Months Ended	12 Months Ended
Dec. 27, 2025	Sep. 27, 2025	Jun. 28, 2025	Mar. 29, 2025	Dec. 28, 2024	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Jun. 28, 2025	Jun. 29, 2024	Sep. 27, 2025	Sep. 28, 2024	Dec. 27, 2025	Dec. 28, 2024	Dec. 30, 2023
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)	$ 21,184	$ 55,008	$ 54,044	$ 9,926	$ (306,813)	$ (18,206)	$ 21,626	$ 5,940	$ 63,970	$ 27,566	$ 118,978	$ 9,360	$ 140,162	$ (297,453)	$ (798,931)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization				35,744				43,404	71,081	88,376	106,307	132,126	134,432	181,409	174,859
Goodwill impairment													28,317	0	850,970
Share-based compensation expense				12,310				12,248	23,022	25,087	26,112	38,577	32,276	52,096	20,288
(Gain) loss on foreign denominated transactions				(373)				7,574	(13,343)	9,923	(17,273)	9,045	(23,063)	25,126	(2,022)
Loss (gain) on foreign currency derivatives				(98)				(3,120)	4,213	(4,422)	2,471	(2,958)	8,347	(7,605)	(1,970)
(Gain) loss on sale and disposal of businesses, fixed assets, and sale leaseback transactions				6,551				(16,963)	(49,535)	9,930	(33,468)	28,948	(28,048)	26,684	14,628
Reclassification of interest rate hedge to income				(514)				(519)	(1,033)	(1,044)	(5,980)	(1,560)	(6,157)	(2,094)	(2,077)
Bad debt expense				4,482				2,523	9,271	2,807	13,227	7,426	18,722	8,963	10,690
Asset impairment charges and lease terminations				9,982				19,326	24,575	2,058	26,345	15,008	28,939	389,242	132,903
Amortization of deferred financing costs and bond discounts				3,089				1,954	6,206	4,933	7,441	7,240	9,736	9,759	10,307
Amortization of cloud computing				1,881				1,943	5,829	3,610	13,312	6,463	17,696	10,825	2,675
Benefit for deferred income taxes				6,172				(2,759)	11,347	(367)	(18,117)	9,527	(20,381)	(56,484)	(138,116)
Loss on extinguishment of debt		4,549				205					4,549	205	5,392	205	0
Other, net				(11,105)				9,088	(5,003)	6,554	(5,140)	5,289	3,887	(3,918)	22,995
Changes in operating assets and liabilities, net of acquisitions:
Accounts and notes receivable, net				(27,425)				(16,481)	(44,295)	(44,745)	(28,112)	(34,702)	(12,088)	(37,572)	17,260
Inventory				1,086				(737)	1,840	4,144	2,993	(4,047)	(1,475)	(2,332)	(3,770)
Prepaid and other assets				(3,756)				(4,777)	(3,162)	7,003	3,171	6,204	(24,962)	2,987	(5,499)
Advertising fund assets and liabilities, restricted				(4,091)				7,650	(11,599)	(12,220)	(14,845)	(4,209)	771	(6,118)	(10,847)
Other assets				(50)				(33,300)	150	(47,699)	(17,465)	(63,015)	(21,403)	(77,243)	(39,814)
Deferred commissions				69				(331)	303	(428)	(343)	642	(578)	934	418
Deferred revenue				(25)				2,107	(934)	1,419	(1,449)	1,696	(1,543)	1,280	2,068
Accounts payable				22,972				19,649	29,874	22,426	578	25,404	604	24,559	17,997
Accrued expenses and other liabilities				16,418				136	10,140	(1,809)	35,807	23,232	30,271	13,627	(45,313)
Income tax receivable				(6,911)				5,053	686	(1,417)	3,865	(8,951)	(6,311)	(12,923)	(1,131)
Cash provided by operating activities				76,334				59,608	150,603	101,685	239,964	206,950	330,543	243,954	228,568
Cash flows from investing activities:
Capital expenditures				(67,764)				(89,483)	(124,641)	(155,920)	(168,350)	(222,503)	(222,774)	(288,635)	(596,478)
Cash used in business acquisitions, net of cash acquired								(2,024)	(6,034)	(2,759)	(8,112)	(2,759)	(11,253)	(2,990)	(59,574)
Proceeds from sale leaseback transactions				8,696				4,550	22,810	11,808	35,279	17,944	73,099	51,371	194,658
Proceeds from sale or disposal of businesses and fixed assets, net of cash sold				12,332				52,677	266,133	112,845	274,797	255,548	280,654	290,329	9,987
Cash provided by (used in) investing activities				(46,736)				(34,280)	158,268	(34,026)	246,614	48,230	232,726	50,075	(451,407)
Cash flows from financing activities:
Payment of debt extinguishment and issuance costs				(1,414)					(1,414)	(871)	(1,414)	(9,646)	(10,489)	(9,646)	0
Proceeds from the issuance of long-term debt												274,794	500,000	274,794	0
Repayment of long-term debt				(32,418)				(7,616)	(305,446)	(34,005)	(370,915)	(422,492)	(994,584)	(465,443)	(27,971)
Proceeds from revolving lines of credit and short-term debt				33,000				46,000	65,000	46,000	121,000	46,000	282,000	46,000	378,000
Repayment of revolving lines of credit and short-term debt				(43,000)				(46,000)	(75,000)	(71,000)	(236,000)	(71,000)	(332,000)	(104,000)	(130,000)
Repayment of principal portion of finance lease liability				(2,017)				(1,032)	(3,140)	(2,625)	(4,681)		(5,506)	(5,028)	(5,570)
Share repurchases										(2)			0	0	(49,956)
Payment of Tax Receivable Agreement								(24,718)		(38,362)		(38,374)	0	(38,374)	0
Acquisition of non-controlling interest										(644)		(644)	0	(644)	0
Tax obligations for share-based compensation				(2,582)					(2,582)	(980)	(3,907)		(4,394)	(1,593)	0
Stock option exercises											0		0	0	6,117
Other, net											0	(998)	0	0	(326)
Cash (used in) provided by financing activities				(48,431)				(33,366)	(322,582)	(102,489)	(495,917)	(227,420)	(564,973)	(303,934)	170,294
Effect of exchange rate changes on cash				1,549				1,133	5,464	(1,615)	4,709	71	5,654	(4,103)	484
Net change in cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted				(17,284)				(6,905)	(8,247)	(36,445)	(4,630)	27,831	3,950	(14,008)	(52,061)
Cash and cash equivalents, beginning of period	134,772	133,079	125,255	141,810	178,058	122,239	144,082	155,912	141,810	155,912	141,810	155,912	141,810	155,912	213,504
Cash included in advertising fund assets, restricted, beginning of period	41,361	39,438	38,227	38,930	40,465	32,008	43,462	38,537	38,930	38,537	38,930	38,537	38,930	38,537	32,871
Restricted cash from continuing operations, beginning of period	335	334	332	358	4,414	4,414	657	657	358	657	358	657	358	657	792
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, beginning of period	176,468	172,851	163,814	181,098	222,937	158,661	188,201	195,106	181,098	195,106	181,098	195,106	181,098	195,106	247,167
Cash and cash equivalents, end of period		134,772	133,079	125,255	141,810	178,058	122,239	144,082	133,079	122,239	134,772	178,058		141,810	155,912
Cash included in advertising fund assets, restricted, end of period	52,204	41,361	39,438	38,227	38,930	40,465	32,008	43,462	39,438	32,008	41,361	40,465	52,204	38,930	38,537
Restricted cash from continuing operations, end of period	162	335	334	332	358	4,414	4,414	657	334	4,414	335	4,414	162	358	657
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, end of period	185,048	176,468	172,851	163,814	181,098	222,937	158,661	188,201	172,851	158,661	176,468	222,937	185,048	181,098	195,106
Supplemental cash flow disclosures - non-cash items:
Capital expenditures included in accrued expenses and other liabilities				10,260					5,468		5,143	13,546	3,786	16,353	33,695
Deferred consideration included in accrued expenses and other liabilities													977	1,596	3,311
Proceeds from sale of fixed assets included in accounts and notes receivable, net													0	8,813	0
Supplemental cash flow disclosures - cash paid for:
Interest													120,769	147,748	156,083
Income taxes													24,853	37,144	22,947
As Previously Reported
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		60,862	47,564	5,506		(14,947)	30,159	4,261	53,070	34,420	113,932	19,473		(292,496)	(744,962)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization				35,355				43,229	70,281	87,862	105,109	131,219		180,112	175,296
Goodwill impairment															850,970
Share-based compensation expense				11,788				11,861	23,078	22,843	28,269	35,641		48,139	15,300
(Gain) loss on foreign denominated transactions				(132)				7,574	(17,630)	9,923	(21,560)	8,744		29,413	(2,022)
Loss (gain) on foreign currency derivatives				342				(3,253)	5,643	(4,921)	4,154	(2,977)		(9,174)	(1,056)
(Gain) loss on sale and disposal of businesses, fixed assets, and sale leaseback transactions				12,933				(12,913)	(27,694)	13,406	(21,560)	32,998		35,722	4,909
Reclassification of interest rate hedge to income				(514)				(519)	(1,033)	(1,044)	(5,980)	(1,560)		(2,094)	(2,077)
Bad debt expense				4,510				2,070	9,293	1,738	13,275	5,759		6,672	1,938
Asset impairment charges and lease terminations				5,813				19,326	18,460	2,058	19,747	15,008		389,242	132,903
Amortization of deferred financing costs and bond discounts				3,089				1,954	6,206	4,933	7,441	7,240		9,759	10,307
Amortization of cloud computing				1,881				1,345	9,136	2,414	15,190	3,436		8,270	1,923
Benefit for deferred income taxes				4,540				(2,807)	2,215	5,036	(36,628)	13,571		(66,594)	(125,804)
Loss on extinguishment of debt		4,549				205					4,549	205		205
Other, net				(6,985)				10,669	(3,631)	7,322	(2,500)	3,219		(22,648)	22,320
Changes in operating assets and liabilities, net of acquisitions:
Accounts and notes receivable, net				(26,449)				(17,351)	(40,742)	(47,245)	(30,866)	(37,752)		(48,190)	13,561
Inventory				3,310				(1,005)	773	11,310	2,657	1,337		2,618	(11,731)
Prepaid and other assets				(5,079)				(4,270)	(6,322)	7,986	2,242	7,648		3,467	(6,877)
Advertising fund assets and liabilities, restricted				(4,091)				7,650	(11,599)	(12,220)	(14,845)	(4,209)		(5,031)	(16,861)
Other assets				(2,584)				(33,300)	(104)	(47,699)	(18,210)	(63,015)		(85,491)	(39,814)
Deferred commissions				69				(331)	303	(428)	(343)	642		934	418
Deferred revenue				(255)				1,659	(1,164)	971	(1,679)	1,248		832	1,937
Accounts payable				20,847				14,165	28,707	3,968	(533)	11,504		29,397	7,390
Accrued expenses and other liabilities				18,122				6,293	22,661	8,022	39,296	27,359		17,588	(52,854)
Income tax receivable				(6,885)				3,976	(1,380)	(3,431)	16,588	(8,230)		10,795	53
Cash provided by operating activities				75,131				60,283	155,527	107,224	234,745	208,508		241,447	235,167
Cash flows from investing activities:
Capital expenditures				(56,227)				(89,483)	(127,622)	(155,920)	(167,384)	(219,307)		(288,504)	(596,478)
Cash used in business acquisitions, net of cash acquired								(2,024)	(6,034)	(2,759)	(8,112)	(2,759)		(2,990)	(59,574)
Proceeds from sale leaseback transactions				8,696				4,550	22,810	11,808	35,279	17,944		51,371	194,658
Proceeds from sale or disposal of businesses and fixed assets, net of cash sold				3,519				52,677	268,398	112,845	277,062	255,548		299,142	9,987
Cash provided by (used in) investing activities				(44,012)				(34,280)	157,552	(34,026)	249,845	51,426		59,019	(451,407)
Cash flows from financing activities:
Payment of debt extinguishment and issuance costs				(1,414)					(1,414)	(871)	(1,414)	(9,646)		(9,646)
Proceeds from the issuance of long-term debt												274,794		274,794
Repayment of long-term debt				(32,418)				(7,616)	(305,446)	(34,005)	(370,915)	(422,492)		(465,443)	(27,971)
Proceeds from revolving lines of credit and short-term debt				33,000				46,000	65,000	46,000	121,000	46,000		46,000	378,000
Repayment of revolving lines of credit and short-term debt				(43,000)				(46,000)	(75,000)	(71,000)	(236,000)	(71,000)		(104,000)	(130,000)
Repayment of principal portion of finance lease liability				(1,353)				(886)	(2,440)	(2,199)	(3,581)			(3,931)	(5,165)
Share repurchases										(2)					(49,956)
Payment of Tax Receivable Agreement								(24,718)		(38,362)		(38,374)		(38,374)
Acquisition of non-controlling interest										(644)		(644)		(644)
Tax obligations for share-based compensation				(2,582)					(2,582)	(980)	(3,907)			(1,593)
Stock option exercises											0				6,117
Other, net											0	(998)			(326)
Cash (used in) provided by financing activities				(47,767)				(33,220)	(321,882)	(102,063)	(494,817)	(226,661)		(302,837)	170,699
Effect of exchange rate changes on cash				1,549				1,133	5,464	(1,615)	4,709	71		(4,103)	484
Net change in cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted				(15,099)				(6,084)	(3,339)	(30,480)	(5,518)	33,344		(6,474)	(45,057)
Cash and cash equivalents, beginning of period	162,028	166,131	155,584	169,954	204,181	148,814	165,513	176,522	169,954	176,522	169,954	176,522	169,954	176,522	227,110
Cash included in advertising fund assets, restricted, beginning of period	41,361	39,438	38,227	38,930	40,465	32,008	43,462	38,537	38,930	38,537	38,930	38,537	38,930	38,537	32,871
Restricted cash from continuing operations, beginning of period	335	334	332	358	4,414	4,414	657	657	358	657	358	657	358	657	792
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, beginning of period	203,724	205,903	194,143	209,242	249,060	185,236	209,632	215,716	209,242	215,716	209,242	215,716	209,242	215,716	260,773
Cash and cash equivalents, end of period		162,028	166,131	155,584	169,954	204,181	148,814	165,513	166,131	148,814	162,028	204,181		169,954	176,522
Cash included in advertising fund assets, restricted, end of period		41,361	39,438	38,227	38,930	40,465	32,008	43,462	39,438	32,008	41,361	40,465		38,930	38,537
Restricted cash from continuing operations, end of period		335	334	332	358	4,414	4,414	657	334	4,414	335	4,414		358	657
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, end of period		203,724	205,903	194,143	209,242	249,060	185,236	209,632	205,903	185,236	203,724	249,060		209,242	215,716
Supplemental cash flow disclosures - non-cash items:
Capital expenditures included in accrued expenses and other liabilities				8,092					6,418		5,745	16,742		16,484	33,695
Deferred consideration included in accrued expenses and other liabilities														1,596	3,311
Proceeds from sale of fixed assets included in accounts and notes receivable, net														0
Supplemental cash flow disclosures - cash paid for:
Interest														147,748	156,083
Income taxes														37,144	22,947
Restatement Impacts
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income (loss)		(5,854)	6,480	4,420		(3,259)	(8,533)	1,679	10,900	(6,854)	5,046	(10,113)		(4,957)	(53,969)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization				389				175	800	514	1,198	907		1,297	(437)
Goodwill impairment															0
Share-based compensation expense				522				387	(56)	2,244	(2,157)	2,936		3,957	4,988
(Gain) loss on foreign denominated transactions				(241)				0	4,287	0	4,287	301		(4,287)	0
Loss (gain) on foreign currency derivatives				(440)				133	(1,430)	499	(1,683)	19		1,569	(914)
(Gain) loss on sale and disposal of businesses, fixed assets, and sale leaseback transactions				(6,382)				(4,050)	(21,841)	(3,476)	(11,908)	(4,050)		(9,038)	9,719
Reclassification of interest rate hedge to income				0				0	0	0	0	0		0	0
Bad debt expense				(28)				453	(22)	1,069	(48)	1,667		2,291	8,752
Asset impairment charges and lease terminations				4,169				0	6,115	0	6,598	0		0	0
Amortization of deferred financing costs and bond discounts				0				0	0	0	0	0		0	0
Amortization of cloud computing				0				598	(3,307)	1,196	(1,878)	3,027		2,555	752
Benefit for deferred income taxes				1,632				48	9,132	(5,403)	18,511	(4,044)		10,110	(12,312)
Loss on extinguishment of debt		0				0					0	0		0
Other, net				(4,120)				(1,581)	(1,372)	(768)	(2,640)	2,070		18,730	675
Changes in operating assets and liabilities, net of acquisitions:
Accounts and notes receivable, net				(976)				870	(3,553)	2,500	2,754	3,050		10,618	3,699
Inventory				(2,224)				268	1,067	(7,166)	336	(5,384)		(4,950)	7,961
Prepaid and other assets				1,323				(507)	3,160	(983)	929	(1,444)		(480)	1,378
Advertising fund assets and liabilities, restricted				0				0	0	0	0	0		(1,087)	6,014
Other assets				2,534				0	254	0	745	0		8,248	0
Deferred commissions				0				0	0	0	0	0		0	0
Deferred revenue				230				448	230	448	230	448		448	131
Accounts payable				2,125				5,484	1,167	18,458	1,111	13,900		(4,838)	10,607
Accrued expenses and other liabilities				(1,704)				(6,157)	(12,521)	(9,831)	(3,489)	(4,127)		(3,961)	7,541
Income tax receivable				(26)				1,077	2,066	2,014	(12,723)	(721)		(23,718)	(1,184)
Cash provided by operating activities				1,203				(675)	(4,924)	(5,539)	5,219	(1,558)		2,507	(6,599)
Cash flows from investing activities:
Capital expenditures				(11,537)				0	2,981	0	(966)	(3,196)		(131)	0
Cash used in business acquisitions, net of cash acquired								0	0	0	0	0		0	0
Proceeds from sale leaseback transactions				0				0	0	0	0	0		0	0
Proceeds from sale or disposal of businesses and fixed assets, net of cash sold				8,813				0	(2,265)	0	(2,265)	0		(8,813)	0
Cash provided by (used in) investing activities				(2,724)				0	716	0	(3,231)	(3,196)		(8,944)	0
Cash flows from financing activities:
Payment of debt extinguishment and issuance costs				0					0	0	0	0		0
Proceeds from the issuance of long-term debt												0		0
Repayment of long-term debt				0				0	0	0	0	0		0	0
Proceeds from revolving lines of credit and short-term debt				0				0	0	0	0	0		0	0
Repayment of revolving lines of credit and short-term debt				0				0	0	0	0	0		0	0
Repayment of principal portion of finance lease liability				(664)				(146)	(700)	(426)	(1,100)			(1,097)	(405)
Share repurchases										0					0
Payment of Tax Receivable Agreement								0		0		0		0
Acquisition of non-controlling interest										0		0		0
Tax obligations for share-based compensation				0					0	0	0			0
Stock option exercises											0				0
Other, net											0	0			0
Cash (used in) provided by financing activities				(664)				(146)	(700)	(426)	(1,100)	(759)		(1,097)	(405)
Effect of exchange rate changes on cash				0				0	0	0	0	0		0	0
Net change in cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted				(2,185)				(821)	(4,908)	(5,965)	888	(5,513)		(7,534)	(7,004)
Cash and cash equivalents, beginning of period	(27,256)	(33,052)	(30,329)	(28,144)	(26,123)	(26,575)	(21,431)	(20,610)	(28,144)	(20,610)	(28,144)	(20,610)	(28,144)	(20,610)	(13,606)
Cash included in advertising fund assets, restricted, beginning of period	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Restricted cash from continuing operations, beginning of period	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, beginning of period	$ (27,256)	(33,052)	(30,329)	(28,144)	(26,123)	(26,575)	(21,431)	(20,610)	(28,144)	(20,610)	(28,144)	(20,610)	$ (28,144)	(20,610)	(13,606)
Cash and cash equivalents, end of period		(27,256)	(33,052)	(30,329)	(28,144)	(26,123)	(26,575)	(21,431)	(33,052)	(26,575)	(27,256)	(26,123)		(28,144)	(20,610)
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Restricted cash from continuing operations, end of period		0	0	0	0	0	0	0	0	0	0	0		0	0
Cash, cash equivalents, restricted cash, and cash included in advertising fund assets, restricted, end of period		$ (27,256)	$ (33,052)	(30,329)	$ (28,144)	$ (26,123)	$ (26,575)	$ (21,431)	(33,052)	$ (26,575)	(27,256)	(26,123)		(28,144)	(20,610)
Supplemental cash flow disclosures - non-cash items:
Capital expenditures included in accrued expenses and other liabilities				$ 2,168					$ (950)		$ (602)	$ (3,196)		(131)	0
Deferred consideration included in accrued expenses and other liabilities														0	0
Proceeds from sale of fixed assets included in accounts and notes receivable, net														8,813
Supplemental cash flow disclosures - cash paid for:
Interest														0	0
Income taxes														$ 0	$ 0

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