Dispositions - Tabular (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 02, 2022
Jan. 03, 2021
Dec. 29, 2019
Carrying amount of major classes of assets included as part of discontinued operations:      
Accounts receivable   $ 3,951  
Inventories   2,104  
Prepaid expenses and other current assets   2,423  
Total current assets of the disposal group classified as held for sale $ 0 8,478  
Property and equipment, net   63,214  
Operating lease right-of-use assets   96,639  
Other assets   170  
Total non-current assets of the disposal group classified as held for sale 0 160,023  
Total assets of the disposal group classified as held for sale   168,501  
Carrying amount of major classes of liabilities included as part of discontinued operations:      
Current portion of long-term debt   199  
Accounts payable   5,014  
Accrued liabilities   9,363  
Other current liabilities   12,649  
Total current liabilities of the disposal group classified as held for sale 0 27,225  
Long-term debt, net of current portion   740  
Operating lease liabilities   93,970  
Deferred tax liabilities   1,840  
Other non-current liabilities   1,773  
Total non-current liabilities of the disposal group classified as held for sale 0 98,323  
Total liabilities of the disposal group classified as held for sale   125,548  
Revenues:      
Total revenues 152,339 239,445 $ 297,470
Costs and expenses:      
Cost of sales 43,480 70,433 92,334
Restaurant wages and related expenses (including stock-based compensation expense of $172, $127, and $125, respectively) 48,399 74,817 94,269
Restaurant rent expense 12,995 22,588 25,755
Other restaurant operating expenses 24,814 34,357 41,623
General and administrative (including stock-based compensation expense of $1,688, $603, and $329, respectively) 11,442 13,229 14,290
Depreciation and amortization 7,799 16,197 17,009
Pre-opening costs 0 69 592
Other income and expense items that are not major 3,935 10,133 24,994
Total operating expenses 152,864 241,823 378,775
Income (loss) from operations (525) (2,378) (81,305)
Interest expense 4,678 4,464 3,547
Gain on sale of Taco Cabana (24,979) 0 0
Loss on extinguishment of debt 5,307 1,241 0
Income (loss) from discontinued operations before income taxes 14,469 (8,083) (84,852)
Provision for (benefit from) income taxes (3,986) (1,258) (2,461)
Income (loss) from discontinued operations, net of tax 18,455 (6,825) (82,391)
Non-cash Operating Activities [Abstract]      
Gain on disposals of property and equipment, net (124) (3,267) (6)
Stock-based compensation 6,076 3,484 2,844
Impairment and other lease charges 1,670 9,139 13,101
Goodwill impairment 0 0 67,909
Loss on extinguishment of debt 5,307 1,241 0
Gain on sale of Taco Cabana (24,979) 0 0
Depreciation and amortization 28,373 38,206 39,195
Investing activities:      
New restaurant development 0 (1,863) (11,390)
Restaurant remodeling (2,380) (1,103) (2,573)
Other restaurant capital expenditures (14,732) (11,270) (19,335)
Corporate and restaurant information systems (2,416) (4,133) (7,949)
Total capital expenditures (19,528) (18,369) (41,247)
Proceeds from sale of Taco Cabana 74,910 0 0
Proceeds from disposals of properties 1,307 9,559 1,774
Proceeds from sale-leaseback transactions 3,083 17,222 0
Net cash provided by (used in) investing activities – discontinued operations 72,798 385 (18,125)
Supplemental cash flow disclosures of non-cash investing and financing activities:      
Operating lease right-of-use assets 154,127 164,665  
Operating lease liabilities 173,651 183,831  
Discontinued Operations      
Costs and expenses:      
Stock-based compensation expense 1,900 700 500
Goodwill impairment 0 0 67,909
Loss on extinguishment of debt 5,307 1,241 0
Non-cash Operating Activities [Abstract]      
Gain on disposals of property and equipment, net (217) (551) 21
Stock-based compensation 1,860 730 454
Impairment and other lease charges 132 1,116 13,086
Goodwill impairment 0 0 67,909
Loss on extinguishment of debt 5,307 1,241 0
Gain on sale of Taco Cabana (24,979) 0 0
Depreciation and amortization 7,799 16,197 17,009
Investing activities:      
New restaurant development 0 (854) (4,065)
Restaurant remodeling (1,283) (745) (919)
Other restaurant capital expenditures (5,050) (4,728) (9,266)
Corporate and restaurant information systems (169) (1,559) (3,875)
Total capital expenditures (6,502) (7,886) (18,125)
Proceeds from sale of Taco Cabana 74,910 0 0
Proceeds from disposals of properties 1,307 4,305 0
Proceeds from sale-leaseback transactions 3,083 3,966 0
Supplemental cash flow disclosures:      
Capitalized interest included in interest paid 0 57 247
Interest paid on long-term debt 4,338 4,001 4,198
Supplemental cash flow disclosures of non-cash investing and financing activities:      
Accruals for capital expenditures 0 1,027 1,510
Accruals for financing costs associated with debt 0 277 0
Operating lease ROU assets 5,156 18,466 6,456
Finance lease obligations incurred 0 33 304
Operating lease ROU assets 2,695 953 794
Operating lease liabilities 3,443 1,217 1,054
Operating lease right-of-use assets 0 0 112,905
Operating lease liabilities 0 0 122,441
Discontinued Operations | Restaurant Wages And Related Expenses      
Costs and expenses:      
Stock-based compensation expense 172 127 125
Discontinued Operations | General and Administrative Expense      
Costs and expenses:      
Stock-based compensation expense $ 1,688 $ 603 $ 329