Condensed Consolidating Schedules - Balance Sheet (Details) - USD ($) $ in Thousands		Jun. 30, 2019	Mar. 31, 2019	Dec. 30, 2018	Jul. 01, 2018	Apr. 01, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents		$ 113,636		$ 63,170	$ 88,887
Restricted Cash and Cash Equivalents		182		151
Receivables and Income Tax Receivables, Net, Current		20,676		34,180
Inventories		25,465		23,807
Prepaid expenses		21,252		25,424
Total current assets		181,211		146,732
Property and equipment, net		523,617		539,185
Operating Lease, Right-of-Use Asset		537,031		0
Finance Lease, Right-of-Use Asset		9,593
Goodwill		484,438		484,438
Intangible assets, net		469,730		477,085
Intercompany		0		0
Investment in subsidiaries		0		0
Other noncurrent assets		17,781		18,725
Total assets		2,213,808		1,666,165
Current liabilities:
Bank indebtedness and other long-term debt, current portion	[1]	7,600		7,600
Operating Lease, Liability, Current		48,381		0
Accounts payable, accrued expenses and unearned revenues		108,861		93,027
Other current liabilities		4,397		5,955
Total current liabilities		169,239		106,582
Operating Lease, Liability, Noncurrent		523,598		0
Bank indebtedness and other long-term debt, less current portion		959,874		961,514
Operating Lease, Liability				590,800
Deferred tax liability		106,646		107,058
Intercompany		0		0
Sale leaseback obligations, less current portion		172,704		174,520
Other noncurrent liabilities		199,356		248,440
Total liabilities		1,958,713		1,423,594
Stockholder’s equity:
Common stock		0		0
Capital in excess of par value		359,867		359,570
Accumulated deficit		(103,148)		(115,660)
Accumulated other comprehensive loss		(1,624)		(1,339)
Total stockholder’s equity		255,095	$ 263,788	242,571	$ 265,938	$ 274,592	$ 262,148
Total liabilities and stockholder’s equity		2,213,808		1,666,165
Issuer
Current assets:
Restricted Cash and Cash Equivalents		0		0
Guarantors
Current assets:
Cash and cash equivalents		7,236		6,725
Restricted Cash and Cash Equivalents		0		0
Receivables and Income Tax Receivables, Net, Current		6,393		4,956
Inventories		5,980		6,617
Prepaid expenses		11,779		10,562
Total current assets		31,388		28,860
Property and equipment, net		67,913		64,721
Operating Lease, Right-of-Use Asset		47,267
Goodwill		51,414		51,414
Intangible assets, net		461,362		462,369
Intercompany		87,166		66,373
Investment in subsidiaries		0		0
Other noncurrent assets		10,854		11,409
Total assets		757,364		685,146
Current liabilities:
Bank indebtedness and other long-term debt, current portion		0		0
Operating Lease, Liability, Current		3,552
Accounts payable, accrued expenses and unearned revenues		44,790		34,429
Other current liabilities		0		510
Total current liabilities		48,342		34,939
Operating Lease, Liability, Noncurrent		55,072
Bank indebtedness and other long-term debt, less current portion		0		0
Deferred tax liability		18,201		17,866
Intercompany		117,590		119,498
Other noncurrent liabilities		4,915		18,191
Total liabilities		244,120		190,494
Stockholder’s equity:
Common stock		0		0
Capital in excess of par value		466,114		466,114
Accumulated deficit		47,130		28,538
Accumulated other comprehensive loss		0		0
Total stockholder’s equity		513,244		494,652
Total liabilities and stockholder’s equity		757,364		685,146
Non-Guarantor Subsidiaries [Member]
Current assets:
Cash and cash equivalents		2,221		1,670
Restricted Cash and Cash Equivalents		182		151
Receivables and Income Tax Receivables, Net, Current		4,689		4,117
Inventories		301		294
Prepaid expenses		1,383		598
Total current assets		8,776		6,830
Property and equipment, net		5,346		5,637
Operating Lease, Right-of-Use Asset		10,006
Goodwill		0		0
Intangible assets, net		0		0
Intercompany		0		0
Investment in subsidiaries		0		0
Other noncurrent assets		14		24
Total assets		24,142		12,491
Current liabilities:
Bank indebtedness and other long-term debt, current portion		0		0
Operating Lease, Liability, Current		1,128
Accounts payable, accrued expenses and unearned revenues		3,981		2,321
Other current liabilities		16		16
Total current liabilities		5,125		2,337
Operating Lease, Liability, Noncurrent		9,233
Bank indebtedness and other long-term debt, less current portion		0		0
Deferred tax liability		(1,653)		(1,857)
Intercompany		27,464		28,591
Other noncurrent liabilities		30		516
Total liabilities		40,199		29,587
Stockholder’s equity:
Common stock		0		0
Capital in excess of par value		3,241		3,241
Accumulated deficit		(17,674)		(18,691)
Accumulated other comprehensive loss		(1,624)		(1,646)
Total stockholder’s equity		(16,057)		(17,096)
Total liabilities and stockholder’s equity		24,142		12,491
Subsidiary Issuer [Member]
Current assets:
Cash and cash equivalents		104,179		54,775
Receivables and Income Tax Receivables, Net, Current		13,600		28,421
Inventories		19,184		16,896
Prepaid expenses		8,090		14,264
Total current assets		145,053		114,356
Property and equipment, net		450,358		468,827
Operating Lease, Right-of-Use Asset		479,758
Goodwill		433,024		433,024
Intangible assets, net		8,368		14,716
Intercompany		53,882		78,402
Investment in subsidiaries		497,187		477,556
Other noncurrent assets		6,913		7,292
Total assets		2,074,543		1,594,173
Current liabilities:
Bank indebtedness and other long-term debt, current portion		7,600		7,600
Operating Lease, Liability, Current		43,701
Accounts payable, accrued expenses and unearned revenues		60,090		56,277
Other current liabilities		4,381		5,429
Total current liabilities		115,772		69,306
Operating Lease, Liability, Noncurrent		459,293
Bank indebtedness and other long-term debt, less current portion		959,874		961,514
Deferred tax liability		90,098		91,049
Intercompany		0		0
Other noncurrent liabilities		194,411		229,733
Total liabilities		1,819,448		1,351,602
Stockholder’s equity:
Common stock		0		0
Capital in excess of par value		359,867		359,570
Accumulated deficit		(103,148)		(115,660)
Accumulated other comprehensive loss		(1,624)		(1,339)
Total stockholder’s equity		255,095		242,571
Total liabilities and stockholder’s equity		2,074,543		1,594,173
Eliminations
Current assets:
Cash and cash equivalents		0		0
Restricted Cash and Cash Equivalents		0		0
Receivables and Income Tax Receivables, Net, Current		(4,006)		(3,314)
Inventories		0		0
Prepaid expenses		0		0
Total current assets		(4,006)		(3,314)
Property and equipment, net		0		0
Operating Lease, Right-of-Use Asset		0
Goodwill		0		0
Intangible assets, net		0		0
Intercompany		(141,048)		(144,775)
Investment in subsidiaries		(497,187)		(477,556)
Other noncurrent assets		0		0
Total assets		(642,241)		(625,645)
Current liabilities:
Bank indebtedness and other long-term debt, current portion		0		0
Operating Lease, Liability, Current		0
Accounts payable, accrued expenses and unearned revenues		0		0
Other current liabilities		0		0
Total current liabilities		0		0
Operating Lease, Liability, Noncurrent		0
Bank indebtedness and other long-term debt, less current portion		0		0
Deferred tax liability		0		0
Intercompany		(145,054)		(148,089)
Other noncurrent liabilities		0		0
Total liabilities		(145,054)		(148,089)
Stockholder’s equity:
Common stock		0		0
Capital in excess of par value		(469,355)		(469,355)
Accumulated deficit		(29,456)		(9,847)
Accumulated other comprehensive loss		1,624		1,646
Total stockholder’s equity		(497,187)		(477,556)
Total liabilities and stockholder’s equity		$ (642,241)		$ (625,645)

[1] Excluding net deferred financing costs