Restatement of 2018 Consolidated Financial Statements - Impact of Corrections on Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Dec. 29, 2019	Dec. 31, 2018	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Percentage of domestic restaurants franchised	80.00%
Assets
Cash and cash equivalents	$ 27,911		$ 33,258
Accounts receivable, net	80,921		78,118
Income tax receivable	4,024		16,146
Prepaid expenses		$ 25,707	30,376
Other current assets			5,678
Total current assets	181,546		196,277
Deferred income taxes, net	1,839		1,137
Total assets	730,721		595,897
Current liabilities:
Accounts payable	29,141		27,106
Accrued expenses and other current liabilities	120,566		129,167
Current deferred revenue	5,624		6,022
Current portion of long-term debt	20,000		20,009
Total current liabilities	207,945		188,894
Deferred revenue	14,722		17,250
Total liabilities	790,459		894,446
Retained earnings	205,697		242,182
Total stockholders' deficit	(316,656)		(304,013)	$ (105,954)	$ 9,801
Total liabilities, Series B Convertible Preferred Stock, Redeemable noncontrolling interests and Stockholders' (deficit)	$ 730,721		595,897
As reported
Assets
Cash and cash equivalents			19,468
Accounts receivable, net			67,854
Income tax receivable			16,073
Prepaid expenses			29,935
Other current assets			5,677
Total current assets			171,708
Deferred income taxes, net			756
Total assets			570,947
Current liabilities:
Accounts payable			29,891
Accrued expenses and other current liabilities			105,712
Current deferred revenue			2,443
Current portion of long-term debt			20,000
Total current liabilities			164,636
Deferred revenue			14,679
Total liabilities			867,617
Retained earnings			244,061
Total stockholders' deficit			(302,134)
Total liabilities, Series B Convertible Preferred Stock, Redeemable noncontrolling interests and Stockholders' (deficit)			570,947
Total Adjustments
Assets
Cash and cash equivalents			13,790
Accounts receivable, net			10,264
Income tax receivable			73
Prepaid expenses			441
Other current assets			1
Total current assets			24,569
Deferred income taxes, net			381
Total assets			24,950
Current liabilities:
Accounts payable			(2,785)
Accrued expenses and other current liabilities			23,455
Current deferred revenue			3,579
Current portion of long-term debt			9
Total current liabilities			24,258
Deferred revenue			2,571
Total liabilities			26,829
Retained earnings			(1,879)
Total stockholders' deficit			(1,879)
Total liabilities, Series B Convertible Preferred Stock, Redeemable noncontrolling interests and Stockholders' (deficit)			$ 24,950