Related Party Transactions Disclosure [Text Block] | Transactions with Related Parties In connection with an acquisition of restaurants from BKC in 2012, the Company issued to BKC 100 shares of Series A Convertible Preferred Stock, which was exchanged for 100 shares of newly issued Series B Convertible Preferred Stock in 2018. The Series B Convertible Preferred Stock was further exchanged for 100 shares of newly issued Series D Convertible Preferred Stock in 2022. These preferred shares are convertible into 9,414,580 shares of common stock, which as of December 31, 2023 represents approximately 14.7% of the outstanding shares of the Company's common stock after giving effect to the conversion of the Series D Convertible Preferred Stock and excluding shares held in treasury. See Note 13—Stockholder's Equity for further information. Pursuant to the Certificate of Designation of the Series D Convertible Preferred Stock (the "Certificate of Designation"), the BKC Stockholders are entitled to elect two representatives on the Company's Board of Directors. The approval of the BKC Stockholders is also required before the Company can take certain actions, including, among other things, amending the Company's certificate of incorporation or bylaws, declaring or paying a special cash dividend, amending the size of the Company's Board of Directors, or engaging in any business other than the ownership and operation of Burger King restaurants, in each case as more particularly described in the Certificate of Designation. The Company operates its Burger King restaurants under franchise agreements with BKC and its Popeyes restaurants under franchise agreements with PLK, both subsidiaries of RBI. These franchise agreements generally provide for an initial term of twenty years and currently have an initial franchise fee of $50,000. With BKC's and PLK's respective approval, the Company can elect to extend franchise agreements for additional 20-year terms, provided that the restaurant meets the current restaurant image standard and the Company is not in default under terms of the franchise agreement. As a franchise operator, the Company’s franchised restaurants routinely and expectedly come up for renewal in the ordinary course of business, in connection with the expiration of franchise terms. The Company has a history of successfully renegotiating franchise agreements as they become available for renewal, and does not anticipate that existing franchise expirations or anticipated franchise expirations to have a material impact on the Company’s ability to operate its franchised restaurant locations. In addition to the initial franchise fee, the Company generally pays BKC a monthly royalty at a rate of 4.5% of its Burger King sales and PLK a weekly royalty at a rate of 5.0% of its Popeyes sales. Royalty expense was $83.9 million, $76.8 million, and $72.8 million for the years ended December 31, 2023, January 1, 2023 and January 2, 2022, respectively and is included in other restaurant operating expenses in the consolidated statements of comprehensive income (loss). Beginning in May of 2021, the Company also pays a per-use transaction fee to BKC for use of its digital platform which was $3.0 million, $2.1 million and $1.3 million for the years ended December 31, 2023, January 1, 2023 and January 2, 2022, respectively, and is included in other restaurant operating expenses in the consolidated statements of comprehensive income (loss). The Company is also generally required to contribute 4% of restaurant sales from the Company's restaurants to the advertising funds utilized by BKC and PLK for their advertising, promotional programs and public relations activities, and amounts for additional local advertising in markets that approve such advertising. Advertising expense associated with these expenditures was $73.8 million, $67.7 million and $64.0 million for the years ended December 31, 2023, January 1, 2023 and January 2, 2022, respectively. As of December 31, 2023, January 1, 2023, and January 2, 2022, the Company leased 217, 217 and 225 of its restaurant locations from BKC, respectively. As of December 31, 2023, the terms and conditions of the leases with BKC are identical to those between BKC and their third-party lessor for 95 of the restaurants. Aggregate rent under these BKC leases for the years ended December 31, 2023, January 1, 2023 and January 2, 2022 was $29.4 million, $27.7 million, and $26.9 million, respectively. The Company does not believe that such lease terms have been significantly affected by the fact that the Company and BKC are deemed to be related parties. As of December 31, 2023 and January 1, 2023, the Company owed BKC $16.9 million and $16.0 million respectively, related to the payment of advertising, royalties, digital fees, rent and real estate taxes, which is normally remitted on a monthly basis. These costs are included in accounts payable, other current liabilities, and accrued real estate taxes on the accompanying consolidated balance sheets. The Company, Carrols Corporation, Carrols LLC, and BKC entered into an Amended and Restated Area Development Agreement on January 4, 2021 (the "Amended ADA"). Under the Amended ADA, Carrols LLC has agreed to open, build and operate a total of 50 new Burger King restaurants, 80% of which must be in Kentucky, Tennessee and Indiana. This includes four Burger King restaurants by September 30, 2021 (which were completed in 2021), 10 additional Burger King restaurants by September 30, 2022 (of which six were completed in 2022), 12 additional Burger King restaurants by September 30, 2023 (of which three were completed in 2023), 12 additional Burger King restaurants by September 30, 2024 and 12 additional Burger King restaurants by September 30, 2025. There is a 90-day cure period to meet the required restaurant development each development year. The Company is in ongoing discussions with BKC regarding its development plans, and does not believe the penalties, if any, associated with not meeting these commitments will be material. In addition, pursuant to the Amended ADA, BKC granted Carrols LLC franchise pre-approval to build new Burger King restaurants or acquire Burger King restaurants from Burger King franchisees with respect to 500 Burger King restaurants in the aggregate in (i) Kentucky, Tennessee and Indiana (excluding certain geographic areas in Indiana) and (ii) (a) 16 states, which include Arkansas, Indiana, Kentucky, Louisiana, Maine, Maryland, Michigan, Mississippi, North Carolina, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Vermont and Virginia (subject to certain exceptions for certain limited geographic areas within certain states) and (b) any other geographic locations that Carrols LLC enters after the commencement date of the Amended ADA pursuant to BKC procedures subject to certain limitations. This pre-approval may be suspended as long as the Company is not in compliance with its development commitments described above. In connection with an acquisition of restaurants in 2019, the Company assumed a development agreement for Popeyes, which included an assignment by PLK of its right of first refusal under its franchise agreements with its franchisees for acquisitions in two southern states, as well as a development commitment to open, build and operate approximately 80 new Popeyes restaurants over six years. This development agreement with PLK was terminated on March 17, 2021, with certain covenants applicable to the Company surviving the termination. PLK reserved the right to charge the Company a $0.6 million fee if PLK and the Company are not able to come to a mutually agreeable solution with respect to such fee within a six-month period. The Company has not recorded a liability for such amount as the risk of loss is considered less than reasonably possible at this time. In 2022, the Company entered an agreement with BKC in connection with their "Reclaim the Flame" investment plan. Pursuant to this initiative, BKC has agreed to fund $120 million in additional advertising expenditures over the period October 1, 2022 through December 31, 2024. Following the franchisor's investment period in 2023 and 2024, participating franchisees have agreed to increase their advertising fund contributions by 50 basis points through 2026 if a profitability threshold for the Burger King system is met for the full fiscal year 2024, and further through 2028 if a secondary profitability threshold is met for the full fiscal year 2026. In 2023, certain subsidiaries of the Company entered into certain agreements and related documentation with BKC related to its Royal Reset program and BKC's restaurant technology initiatives: • With respect to BKC's initiative to match restaurant maintenance expenses with restaurant technology investments, BKC will provide the Company with the use of certain restaurant technology equipment worth approximately $12.2 million, conditioned upon the Company completing certain repairs, replacements and improvements with respect to its restaurant assets at a cost of approximately $12.2 million by March 31, 2024. As of December 31, 2023, $8.4 million in equipment has been received by the Company related to this arrangement, including approximately $0.5 million for self-ordering kiosks at 64 restaurants, and the Company has completed $13.1 million in qualified repairs, replacements and improvements. • With respect to BKC's initiative to accelerate the pace of restaurant remodeling, the Company entered into an agreement with BKC to remodel 64 restaurants in total between 2023 and 2024 in connection with their "Reclaim the Flame" remodel incentive program. As of December 31, 2023, three locations have been remodeled in connection with this arrangement. Contributions of $0.7 million were received from BKC in 2023 and an additional $0.9 million is included as a receivable related to related to these remodel projects. • In December 2023, the Company entered into an agreement with BKC under which BKC has agreed to provide the Company with self-order kiosks conditioned upon the purchase of additional self-order kiosks for the restaurants beyond the restaurant technology investments as part of BKC's Royal Reset agreements. Among other things, under this agreement, if the Company provides written notice to BKC by March 31, 2024 to purchase kiosks worth $1.7 million, BKC will provide the Company with an additional $2.5 million of kiosks for use in the restaurants, for a total of $4.2 million of kiosks. These kiosks must be installed by September 30, 2024. The Company may also elect to further expand kiosk installation and if, by written notice to BKC no later than May 31, 2024, the Company agrees to purchase up to an additional $2.5 million of kiosks, BKC will provide the Company with additional kiosks worth up to $3.7 million for use in the restaurants for a total additional amount of up to $6.2 million of kiosks. These additional kiosks must be installed by December 31, 2024. In October of 2023, Fiesta was acquired by affiliates of Garnett Station Partners ("GSP"). Matthew Perelman and Alexander Sloane, each a member of the Company’s Board of Directors, are affiliates of GSP and affiliates of Cambridge Franchise Holdings, LLC which owns approximately 19.5% of the outstanding shares of the Company's common stock. As disclosed in Note 15, Fiesta is a former wholly-owned subsidiary of the Company and the Company remains guarantor on eight Fiesta restaurant property leases. |