Significant Accounting Policies (Policies)	3 Months Ended
Apr. 02, 2023
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 months ended April 2, 2023 and April 3, 2022 each contained thirteen weeks. The 2023 fiscal year will end December 31, 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 months ended April 2, 2023 and April 3, 2022 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 months ended April 2, 2023 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 consolidated financial statements contained in the Company's Annual Report on Form 10-K for the year ended January 1, 2023. The January 1, 2023 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 total Company operations. 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.
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 April 2, 2023 and January 1, 2023, 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. Borrowings under the Company's Senior Credit Facilities (including its term B loans) accrue interest at a floating rate tied to a standard short-term borrowing index selected at the Company's option, plus an applicable margin. The Company's liability for its Senior Credit Facilities and 5.875% Senior Notes due 2029 are carried at historical cost in the accompanying balance sheets. The fair value of our term B loans and 5.875% Senior Notes due 2029 is based on recent trading activity, which are Level 2 inputs in the fair value hierarchy. As of April 2, 2023, the term B loans traded at 91.9% of par value and the 5.875% Senior Notes due 2029 traded at 80.5% of par value. 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 entire change in the fair value of the cash flow hedges included in the assessment of hedge effectiveness is recognized in accumulated other comprehensive income. The amounts recorded in other comprehensive income will subsequently be reclassified to earnings as an increase or decrease to interest expense as realized through receipts or payments. The Company classifies cash inflows and outflows from derivatives within operating activities on the condensed consolidated statements of cash flows. The Swap was valued at $7.2 million as of April 2, 2023 and it is classified as Level 2 within the fair value 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 Note 4, the Company recorded long-lived asset impairment charges of $0.1 million during the three months ended April 2, 2023 and $0.2 million during the three months ended April 3, 2022.
New Accounting Pronouncements, Policy [Policy Text Block]	Recently Issued Accounting Pronouncements. In the normal course of business, the Company evaluates all new Accounting Standards Updates ("ASU") and other accounting pronouncements issued by the Financial Accounting Standards Board ("FASB"), Securities and Exchange Commission ("SEC"), or other authoritative accounting bodies to determine the potential impact they may have on its Consolidated Financial Statements. The Company does not expect any of the recently issued accounting pronouncements, which have not already been adopted, to have a material impact on its Consolidated Financial Statements.
Subsequent Events, Policy [Policy Text Block]	Subsequent Events.

Significant Accounting Policies (Policies)

3 Months Ended

Apr. 02, 2023

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 months ended April 2, 2023 and April 3, 2022 each contained thirteen weeks. The 2023 fiscal year will end December 31, 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 months ended April 2, 2023 and April 3, 2022 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 months ended April 2, 2023 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 consolidated financial statements contained in the Company's Annual Report on Form 10-K for the year ended January 1, 2023. The January 1, 2023 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 total Company operations. 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.

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 April 2, 2023 and January 1, 2023, 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. Borrowings under the Company's Senior Credit Facilities (including its term B loans) accrue interest at a floating rate tied to a standard short-term borrowing index selected at the Company's option, plus an applicable margin. The Company's liability for its Senior Credit Facilities and 5.875% Senior Notes due 2029 are carried at historical cost in the accompanying balance sheets. The fair value of our term B loans and 5.875% Senior Notes due 2029 is based on recent trading activity, which are Level 2 inputs in the fair value hierarchy. As of April 2, 2023, the term B loans traded at 91.9% of par value and the 5.875% Senior Notes due 2029 traded at 80.5% of par value.

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 entire change in the fair value of the cash flow hedges included in the assessment of hedge effectiveness is recognized in accumulated other comprehensive income. The amounts recorded in other comprehensive income will subsequently be reclassified to earnings as an increase or decrease to interest expense as realized through receipts or payments. The Company classifies cash inflows and outflows from derivatives within operating activities on the condensed consolidated statements of cash flows. The Swap was valued at $7.2 million as of April 2, 2023 and it is classified as Level 2 within the fair value 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 Note 4, the Company recorded long-lived asset impairment charges of $0.1 million during the three months ended April 2, 2023 and $0.2 million during the three months ended April 3, 2022.

New Accounting Pronouncements, Policy [Policy Text Block]

Recently Issued Accounting Pronouncements. In the normal course of business, the Company evaluates all new Accounting Standards Updates ("ASU") and other accounting pronouncements issued by the Financial Accounting Standards Board ("FASB"), Securities and Exchange Commission ("SEC"), or other authoritative accounting bodies to determine the potential impact they may have on its Consolidated Financial Statements. The Company does not expect any of the recently issued accounting pronouncements, which have not already been adopted, to have a material impact on its Consolidated Financial Statements.

Subsequent Events, Policy [Policy Text Block]

Subsequent Events.