Discontinued Operations - Quarterly Financial Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended			4 Months Ended
	Oct. 01, 2017	Jul. 09, 2017	Apr. 16, 2017	Jan. 21, 2018	Jan. 22, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Basic (in usd per share)				$ (0.02)	$ 0.04
Diluted (in usd per share)				$ (0.02)	$ 0.04
Qdoba
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Company restaurant sales	$ 102,000	$ 107,067	$ 98,793	$ 125,770	$ 128,699
Franchise revenues	4,622	4,678	4,711	5,986	6,053
Company restaurant costs (excluding depreciation and amortization)	(86,194)	(84,747)	(80,713)	(108,618)	(105,716)
Franchise costs (excluding depreciation and amortization)	(2,031)	(879)	(910)	(1,408)	(1,173)
Selling, general and administrative expenses	(8,089)	(8,232)	(7,956)	(12,264)	(12,429)
Depreciation and amortization expenses	(4,725)	(5,023)	(5,057)	(5,012)	(6,695)
Impairment and other charges, net	(5,531)	(1,815)	(3,811)	(1,669)	(3,904)
Interest expense, net	(2,237)	(2,229)	(2,044)	(3,212)	(2,515)
(Losses) earnings from discontinued operations before income taxes	(2,185)	8,820	3,013	(427)	2,320
Income taxes	937	(3,398)	(1,181)	(205)	(876)
(Losses) earnings from discontinued operations, net of income taxes	$ (1,248)	$ 5,422	$ 1,832	$ (632)	$ 1,444
Basic (in usd per share)	$ (0.04)	$ 0.18	$ 0.06	$ (0.02)	$ 0.05
Diluted (in usd per share)	$ (0.04)	$ 0.18	$ 0.06	$ (0.02)	$ 0.05