Significant Accounting Policies (Policies)	6 Months Ended
Jul. 03, 2022
Accounting Policies [Abstract]
Consolidation, Policy [Policy Text Block]	Basis of Consolidation. The accompanying condensed consolidated financial statements include the accounts of the Company and its direct and indirect wholly-owned subsidiaries. All intercompany transactions have been eliminated in consolidation.
Fiscal Period, Policy [Policy Text Block]	Fiscal Year. The Company uses a 52-53 week fiscal year ending on the Sunday closest to December 31. The three and six months ended July 3, 2022 and July 4, 2021 contained thirteen and twenty-six weeks, respectively. The 2022 fiscal year will end January 1, 2023 and will contain 52 weeks.
Basis of Presentation, Policy [Policy Text Block]	Basis of Presentation. The unaudited condensed consolidated financial statements as of and for the three and six months ended July 3, 2022 and July 4, 2021 have been prepared without an audit pursuant to the rules and regulations of the Securities and Exchange Commission and do not include certain of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all normal and recurring adjustments considered necessary for a fair presentation of such unaudited condensed consolidated financial statements have been included. The results of operations for the three and six months ended July 3, 2022 are not necessarily indicative of the results to be expected for the full year. These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the year ended January 2, 2022. The January 2, 2022 consolidated balance sheet data is derived from those audited consolidated financial statements.
Use of Estimates, Policy [Policy Text Block]	Use of Estimates. The preparation of the unaudited condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates include accrued occupancy costs, insurance liabilities, lease accounting matters, the valuation of acquired assets and liabilities, interest rate swap valuation, the valuation of deferred income tax assets and liabilities, and the evaluation for impairment of goodwill, long-lived assets and franchise rights. Actual results could differ from those estimates.
Segment Reporting, Policy [Policy Text Block]	Segment Information. Operating segments are components of an entity for which discrete financial information is available and is regularly reviewed by the chief operating decision maker in order to allocate resources and assess performance. The Company's chief operating decision-maker, our President and Chief Executive Officer (“CEO”), currently evaluates the Company's operations from a number of different operational perspectives; however, resource allocation decisions are determined based on the chief operating decision-maker's evaluation of the Company's operations as a whole. The Company derives all significant revenues from a single operating segment, its restaurant business. Accordingly, the Company views the operating results of its restaurants as one reportable segment.
Business Combinations Policy [Policy Text Block]	Business Combinations. In accordance with ASC 805, the Company allocates the purchase price of an acquired business to its identifiable assets and liabilities based on the estimated fair values. The excess of the purchase price over the amount allocated to the assets and liabilities, if any, is recorded as goodwill. The excess value of the net identifiable assets and liabilities acquired over the purchase price, if any, is recorded as a bargain purchase gain. The Company uses all available information to estimate fair values of identifiable intangible assets and property acquired. In making these determinations, the Company may engage an independent third-party valuation specialist to assist with the valuation of certain leasehold improvements, franchise rights and favorable and unfavorable leases. The Company estimates that the seller's carrying value of acquired restaurant equipment, subject to certain adjustments, is equivalent to the fair value of this equipment at the date of the acquisition. The fair values of assumed franchise agreements are valued as if the remaining term of the agreement is at the market rate. The fair values of acquired land, buildings, certain leasehold improvements and restaurant equipment subject to finance leases are determined using both the cost approach and market approach using significant inputs observable in the open market. The Company categorizes these inputs as Level 2 inputs under ASC 820. The fair value of acquired franchise rights and favorable or unfavorable leases positions are determined using the income approach and include unobservable inputs. The Company categorizes these inputs as Level 3 inputs under ASC 820.
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash and Cash Equivalents. The Company considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents. At both July 3, 2022 and January 2, 2022, the Company did not have any cash invested in money market funds classified as cash equivalents on the condensed consolidated balance sheets.
Food, Beverage And Packaging Costs	Food, beverage and packaging costs. The Company includes food, beverage and packaging costs and delivery charges, net of any vendor purchase discounts and rebates, in food, beverage, and packaging costs.
Fair Value of Financial Instruments, Policy [Policy Text Block]	Fair Value of Financial Instruments. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. In determining fair value, the accounting standards establish a three-level hierarchy for inputs used in measuring fair value as follows: Level 1 inputs are quoted prices in active markets for identical assets or liabilities; Level 2 inputs are observable for the asset or liability, either directly or indirectly, including quoted prices in active markets for similar assets or liabilities; and Level 3 inputs are unobservable and reflect the Company's own assumptions. Financial instruments include cash and cash equivalents, trade and other receivables, accounts payable and long-term debt. The carrying amounts of cash and cash equivalents, trade and other receivables and accounts payable approximate fair value because of the short-term nature of these financial instruments. The carrying amount of the Term B Loans at July 3, 2022 approximate fair value because of their variable rates. The fair value of the Company's 5.875% Senior Notes due 2029 is based on its recent trading value, which is considered a Level 2 input, and at July 3, 2022 was approximately $222.0 million. The Company recognizes its derivative arrangements on the balance sheet at fair value, which is considered a Level 2 input. The Company’s only derivative is an interest rate swap (the "Swap") which is designated as a cash flow hedge. Accordingly, the effective portion of the changes in the fair value of this arrangement is recognized in accumulated other comprehensive income (loss) until the hedged item is recognized in earnings. The ineffective portion of the changes in the fair value of this arrangement is immediately recognized in earnings as interest expense. The Company classifies cash inflows and outflows from derivatives within operating activities on the condensed consolidated statements of cash flows. The Swap is valued at $6.0 million as of July 3, 2022. It is classified as Level 2 within the valuation hierarchy. Fair value measurements of non-financial assets and non-financial liabilities are primarily used in the impairment analysis of long-lived assets, goodwill and intangible assets. Long-lived assets and definite-lived intangible assets are measured at fair value on a nonrecurring basis using Level 3 inputs. As described in Notes 4 and 5, the Company recorded $16.7 million in goodwill impairment charges in the second quarter of 2022 and long- lived asset impairment charges of $1.1 million and $1.4 million during the three and six months ended July 3, 2022 and $0.1 million and $0.3 million during the three and six months ended July 4, 2021.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Pronouncements. In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-04 (“ASU 2020-04”) and subsequently ASU No. 2021-01, Reference Rate Reform (Topic 848) in March 2020 and January 2021, respectively. The new guidance provides optional expedients and exceptions for applying U.S. GAAP to contract modifications and hedging relationships, including derivative instruments impacted by changes in the interest rates used for discounting cash flows for computing variable margin settlements, subject to meeting certain criteria, that reference the London Interbank Offered Rate (“LIBOR”) or other reference rates expected to be discontinued in 2022 or 2023. The ASUs establish certain contract modification principles that entities can apply in other areas that may be affected by reference rate reform and certain elective hedge accounting expedients and exceptions. The ASUs may be applied prospectively and are effective for all entities as of March 12, 2020 through December 31, 2022. The Company will adopt this guidance at the discontinuance of LIBOR. The Company is currently evaluating the guidance to determine the timing and extent to which it will apply to the Company's borrowing and interest rate swap arrangements. The adoption of this guidance is not expected to have a material impact on the consolidated financial statements.
Subsequent Events, Policy [Policy Text Block]	Subsequent events. The Company reviewed and evaluated subsequent events through the issuance date of the Company’s unaudited condensed consolidated financial statements.

Significant Accounting Policies (Policies)

6 Months Ended

Jul. 03, 2022

Consolidation, Policy [Policy Text Block]

Basis of Consolidation. The accompanying condensed consolidated financial statements include the accounts of the Company and its direct and indirect wholly-owned subsidiaries. All intercompany transactions have been eliminated in consolidation.

Fiscal Period, Policy [Policy Text Block]

Fiscal Year. The Company uses a 52-53 week fiscal year ending on the Sunday closest to December 31. The three and six months ended July 3, 2022 and July 4, 2021 contained thirteen and twenty-six weeks, respectively. The 2022 fiscal year will end January 1, 2023 and will contain 52 weeks.

Basis of Presentation, Policy [Policy Text Block]

Basis of Presentation. The unaudited condensed consolidated financial statements as of and for the three and six months ended July 3, 2022 and July 4, 2021 have been prepared without an audit pursuant to the rules and regulations of the Securities and Exchange Commission and do not include certain of the information and footnotes required by accounting principles generally accepted in the United States of America for complete financial statements. In the opinion of management, all normal and recurring adjustments considered necessary for a fair presentation of such unaudited condensed consolidated financial statements have been included. The results of operations for the three and six months ended July 3, 2022 are not necessarily indicative of the results to be expected for the full year.

These unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements contained in the Company’s Annual Report on Form 10-K for the year ended January 2, 2022. The January 2, 2022 consolidated balance sheet data is derived from those audited consolidated financial statements.

Use of Estimates, Policy [Policy Text Block]

Use of Estimates. The preparation of the unaudited condensed consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates include accrued occupancy costs, insurance liabilities, lease accounting matters, the valuation of acquired assets and liabilities, interest rate swap valuation, the valuation of deferred income tax assets and liabilities, and the evaluation for impairment of goodwill, long-lived assets and franchise rights. Actual results could differ from those estimates.

Segment Reporting, Policy [Policy Text Block]

Segment Information. Operating segments are components of an entity for which discrete financial information is available and is regularly reviewed by the chief operating decision maker in order to allocate resources and assess performance. The Company's chief operating decision-maker, our President and Chief Executive Officer (“CEO”), currently evaluates the Company's operations from a number of different operational perspectives; however, resource allocation decisions are determined based on the chief operating decision-maker's evaluation of the Company's operations as a whole. The Company derives all significant revenues from a single operating segment, its restaurant business. Accordingly, the Company views the operating results of its restaurants as one reportable segment.

Business Combinations Policy [Policy Text Block]

Business Combinations. In accordance with ASC 805, the Company allocates the purchase price of an acquired business to its identifiable assets and liabilities based on the estimated fair values. The excess of the purchase price over the amount allocated to the assets and liabilities, if any, is recorded as goodwill. The excess value of the net identifiable assets and liabilities acquired over the purchase price, if any, is recorded as a bargain purchase gain. The Company uses all available information to estimate fair values of identifiable intangible assets and property acquired. In making these determinations, the Company may engage an independent third-party valuation specialist to assist with the valuation of certain leasehold improvements, franchise rights and favorable and unfavorable leases. The Company estimates that the seller's carrying value of acquired restaurant equipment, subject to certain adjustments, is equivalent to the fair value of this equipment at the date of the acquisition. The fair values of assumed franchise agreements are valued as if the remaining term of the agreement is at the market rate. The fair values of acquired land, buildings, certain leasehold improvements and restaurant equipment subject to finance leases are determined using both the cost approach and market approach using significant inputs observable in the open market. The Company categorizes these inputs as Level 2 inputs under ASC 820. The fair value of acquired franchise rights and favorable or unfavorable leases positions are determined using the income approach and include unobservable inputs. The Company categorizes these inputs as Level 3 inputs under ASC 820.

Cash and Cash Equivalents, Policy [Policy Text Block]

Cash and Cash Equivalents. The Company considers all highly liquid investments with an original maturity of three months or less when purchased to be cash equivalents. At both July 3, 2022 and January 2, 2022, the Company did not have any cash invested in money market funds classified as cash equivalents on the condensed consolidated balance sheets.

Food, Beverage And Packaging Costs

Food, beverage and packaging costs. The Company includes food, beverage and packaging costs and delivery charges, net of any vendor purchase discounts and rebates, in food, beverage, and packaging costs.

Fair Value of Financial Instruments, Policy [Policy Text Block]

Fair Value of Financial Instruments. Fair value is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants on the measurement date. In determining fair value, the accounting standards establish a three-level hierarchy for inputs used in measuring fair value as follows: Level 1 inputs are quoted prices in active markets for identical assets or liabilities; Level 2 inputs are observable for the asset or liability, either directly or indirectly, including quoted prices in active markets for similar assets or liabilities; and Level 3 inputs are unobservable and reflect the Company's own assumptions. Financial instruments include cash and cash equivalents, trade and other receivables, accounts payable and long-term debt. The carrying amounts of cash and cash equivalents, trade and other receivables and accounts payable approximate fair value because of the short-term nature of these financial instruments. The carrying amount of the Term B Loans at July 3, 2022 approximate fair value because of their variable rates. The fair value of the Company's 5.875% Senior Notes due 2029 is based on its recent trading value, which is considered a Level 2 input, and at July 3, 2022 was approximately $222.0 million.

The Company recognizes its derivative arrangements on the balance sheet at fair value, which is considered a Level 2 input. The Company’s only derivative is an interest rate swap (the "Swap") which is designated as a cash flow hedge. Accordingly, the effective portion of the changes in the fair value of this arrangement is recognized in accumulated other comprehensive income (loss) until the hedged item is recognized in earnings. The ineffective portion of the changes in the fair value of this arrangement is immediately recognized in earnings as interest expense. The Company classifies cash inflows and outflows from derivatives within operating activities on the condensed consolidated statements of cash flows. The Swap is valued at $6.0 million as of July 3, 2022. It is classified as Level 2 within the valuation hierarchy.

Fair value measurements of non-financial assets and non-financial liabilities are primarily used in the impairment analysis of long-lived assets, goodwill and intangible assets. Long-lived assets and definite-lived intangible assets are measured at fair value on a nonrecurring basis using Level 3 inputs. As described in Notes 4 and 5, the Company recorded $16.7 million in goodwill impairment charges in the second quarter of 2022 and long-

lived asset impairment charges of $1.1 million and $1.4 million during the three and six months ended July 3, 2022 and $0.1 million and $0.3 million during the three and six months ended July 4, 2021.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Issued Accounting Pronouncements. In March 2020, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2020-04 (“ASU 2020-04”) and subsequently ASU No. 2021-01, Reference Rate Reform (Topic 848) in March 2020 and January 2021, respectively. The new guidance provides optional expedients and exceptions for applying U.S. GAAP to contract modifications and hedging relationships, including derivative instruments impacted by changes in the interest rates used for discounting cash flows for computing variable margin settlements, subject to meeting certain criteria, that reference the London Interbank Offered Rate (“LIBOR”) or other reference rates expected to be discontinued in 2022 or 2023. The ASUs establish certain contract modification principles that entities can apply in other areas that may be affected by reference rate reform and certain elective hedge accounting expedients and exceptions. The ASUs may be applied prospectively and are effective for all entities as of March 12, 2020 through December 31, 2022. The Company will adopt this guidance at the discontinuance of LIBOR. The Company is currently evaluating the guidance to determine the timing and extent to which it will apply to the Company's borrowing and interest rate swap arrangements. The adoption of this guidance is not expected to have a material impact on the consolidated financial statements.

Subsequent Events, Policy [Policy Text Block]

Subsequent events. The Company reviewed and evaluated subsequent events through the issuance date of the Company’s unaudited condensed consolidated financial statements.