Basis of Presentation and Summary of Significant Accounting Policies - Recently Issued Accounting Standards (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 26, 2019	Jan. 02, 2019	Jan. 01, 2019	Mar. 27, 2018	Jan. 02, 2018	Jan. 03, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents	$ 1,421		$ 7,153	$ 7,153		$ 6,559	$ 8,795
Cumulative Effect of New Accounting Principle in Period of Adoption			(1,912)
Operating Lease, Liability	275,209		213,313	0
Operating Lease, Right-of-Use Asset	258,278		218,855	0
Accounts and other receivables, net	3,580		3,167	3,167
Inventories	3,123		2,932	2,932
Prepaid expenses and other current assets	2,289		2,371	4,935
Assets held for sale	8,411		14,794	14,794
Assets, Current	18,824		30,417	32,981
Property and equipment, net	156,921		147,590	161,429
Goodwill	192,739		321,531	321,531
Trademarks	220,300		220,300	220,300
Intangible assets, net	10,827		10,931	18,507
Other assets, net	4,568		4,208	4,208
Assets	862,457		953,832	758,956
Accounts payable	19,652		19,877	19,877
Other accrued liabilities	34,577		34,360	34,785
Current portion of capital lease obligations and deemed landlord financing liabilities	220		486	1,033
Operating Lease, Liability, Current	17,848		17,303	0
Liabilities, Current	72,297		72,026	55,695
Long-term debt, finance lease obligations, other debt and deemed landlord financing liabilities, excluding current portion, net	144,581		159,624	178,664
Deferred income taxes	69,510		70,179	69,471
Other non-current liabilities	16,601		14,504	32,852
Liabilities	560,350		529,646	336,682
Preferred Stock, Value, Issued	0		0	0
Common Stock, Value, Issued	4		4	4
Additional paid-in capital	333,379		336,941	336,941
Accumulated other comprehensive (loss) income	(52)		180	180
(Accumulated deficit) retained earnings	(31,224)		87,061	85,149
Stockholders' Equity Attributable to Parent	302,107		424,186	422,274		416,249	377,333
Liabilities and Equity	862,457		953,832	758,956
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cash and cash equivalents			0
Operating Lease, Liability			213,313	230,600
Operating Lease, Right-of-Use Asset			218,855
Accounts and other receivables, net			0
Inventories			0
Prepaid expenses and other current assets			(2,564)
Assets held for sale			0
Assets, Current			(2,564)
Property and equipment, net			(13,839)
Goodwill			0
Trademarks			0
Intangible assets, net			(7,576)
Other assets, net			0
Assets			194,876
Accounts payable			0
Other accrued liabilities			(425)
Current portion of capital lease obligations and deemed landlord financing liabilities			(547)
Operating Lease, Liability, Current			17,303
Liabilities, Current			16,331
Long-term debt, finance lease obligations, other debt and deemed landlord financing liabilities, excluding current portion, net			(19,040)
Deferred income taxes			708
Other non-current liabilities	1,800		(18,348)
Liabilities			192,964
Preferred Stock, Value, Issued			0
Common Stock, Value, Issued			0
Additional paid-in capital			0
Accumulated other comprehensive (loss) income			0
(Accumulated deficit) retained earnings			1,912
Stockholders' Equity Attributable to Parent			1,912
Liabilities and Equity			$ 194,876
Retained Earnings (Accumulated Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ (1,912)			$ 707
Stockholders' Equity Attributable to Parent	$ (31,224)			$ 85,149		$ 66,897	$ 17,026