Stockholder's Equity	12 Months Ended
Dec. 29, 2019
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred Stock [Text Block]	Stockholders' Equity Preferred Stock. In 2012, Carrols Restaurant Group issued to BKC 100 shares of the Company's Series A Convertible Preferred Stock ( the "Series A Convertible Preferred Stock") pursuant to a certificate of designation. These shares were convertible into 9,414,580 shares of Carrols Restaurant Group Common Stock ("Carrols Common Stock"). In 2018, Carrols Restaurant Group, BKC and Blue Holdco 1, LLC ("Blue Holdco" and together with BKC, the "BKC Stockholders") exchanged the Series A Convertible Preferred Stock for Series B Convertible Preferred Stock (the "Series B Convertible Preferred Stock") , with substantially the same, powers, preferences and rights of the shares of Series A Convertible Preferred Stock, except to provide that such shares will be transferable by the BKC Stockholders solely to certain of its affiliates or subsidiaries. The Series B Convertible Preferred Stock ranks senior to Carrols Common Stock with respect to rights on liquidation, winding-up and dissolution of Carrols Restaurant Group. The Series B Convertible Preferred Stock is perpetual, will receive any dividends and amounts upon a liquidation event on an as converted basis, does not pay interest and has no mandatory prepayment features. The BKC Stockholders also have certain approval and voting rights as set forth in the certificate of designation for the Series B Convertible Preferred Stock so long as they own greater than 7.5% of the outstanding shares of Carrols Common Stock (on an as-converted basis). The Series B Convertible Preferred Stock will vote with the Company's Common Stock on an as converted basis and provides for the right of the BKC Stockholders to elect (a) two members to the Company's board of directors until the date on which the number of shares of common stock into which the outstanding shares of the the Series B Convertible Preferred Stock held by the BKC stockholders are then convertible constitutes less than 11.5% of the total number of outstanding shares of the Company's Common Stock and (b) one member to the Company's board of directors until the BKC Stockholders own Series B Convertible Preferred Stock (on an as converted basis) of less than 7.5% of the total number of outstanding shares of the Company's Common Stock. In connection with the Cambridge Merger, Cambridge Holdings was issued 10,000 shares of the Company's Series C Convertible Preferred Stock (the " Series C Convertible Preferred Stock") that was automatically converted during the third quarter of 2019 into approximately 7.5 million shares of the Company's Common Stock when such conversion was approved by the Company's stockholders at the Company's annual stockholders meeting on August 29, 2019. With the conversion of the Series C Convertible Preferred Stock in the third quarter of 2019, as of December 29,2019 Cambridge Holdings beneficially owns approximately 24.2% of the Company's Common Stock after giving effect to the conversion of the Series B Convertible Preferred Stock. Stock Repurchase Program. On August 2, 2019, the Company's Board of Directors approved a stock repurchase plan ("Repurchase Program") under which the Company may repurchase up to $25.0 million of its outstanding common stock. The authorization became effective August 2, 2019, and will expire 24 months thereafter, unless terminated earlier by the Company's Board of Directors. Purchases under the Repurchase Program may be made from time to time in open market transactions at prevailing market prices or in privately negotiated transactions (including, without limitation, the use of Rule 10b5-1 plans) in compliance with applicable federal securities laws, including Rule 10b-18 under the Securities Exchange Act of 1934, as amended. The Company has no obligation to repurchase stock under the Repurchase Program, and the timing, actual number and value of shares purchased will depend on the Company's stock price, trading volume, general market and economic conditions, and other factors. During the twelve months ended December 29, 2019, the Company repurchased in open market transactions 553,112 shares of the Company's Common Stock at an average share price of $7.26 for a total cost of $4.0 million under the Repurchase Program. At December 29, 2019, $21.0 million was available to repurchase shares under the Repurchase Program. Shares repurchased are being held in treasury until they are retired at the discretion of the Board of Directors.

Stockholders' Equity

Preferred Stock. In 2012, Carrols Restaurant Group issued to BKC 100 shares of the Company's Series A Convertible Preferred Stock ( the "Series A Convertible Preferred Stock") pursuant to a certificate of designation. These shares were convertible into 9,414,580 shares of Carrols Restaurant Group Common Stock ("Carrols Common Stock"). In 2018, Carrols Restaurant Group, BKC and Blue Holdco 1, LLC ("Blue Holdco" and together with BKC, the "BKC Stockholders") exchanged the Series A Convertible Preferred Stock for Series B Convertible Preferred Stock (the "Series B Convertible Preferred Stock") , with substantially the same, powers, preferences and rights of the shares of Series A Convertible Preferred Stock, except to provide that such shares will be transferable by the BKC Stockholders solely to certain of its affiliates or subsidiaries.

The Series B Convertible Preferred Stock ranks senior to Carrols Common Stock with respect to rights on liquidation, winding-up and dissolution of Carrols Restaurant Group. The Series B Convertible Preferred Stock is perpetual, will receive any dividends and amounts upon a liquidation event on an as converted basis, does not pay interest and has no mandatory prepayment features.

The BKC Stockholders also have certain approval and voting rights as set forth in the certificate of designation for the Series B Convertible Preferred Stock so long as they own greater than 7.5% of the outstanding shares of Carrols Common Stock (on an as-converted basis). The Series B Convertible Preferred Stock will vote with the Company's Common Stock on an as converted basis and provides for the right of the BKC Stockholders to elect (a) two members to the Company's board of directors until the date on which the number of shares of common stock into which the outstanding shares of the the Series B Convertible Preferred Stock held by the BKC stockholders are then convertible constitutes less than 11.5% of the total number of outstanding shares of the Company's Common Stock and (b) one member to the Company's board of directors until the BKC Stockholders own Series B Convertible Preferred Stock (on an as converted basis) of less than 7.5% of the total number of outstanding shares of the Company's Common Stock.

In connection with the Cambridge Merger, Cambridge Holdings was issued 10,000 shares of the Company's Series C Convertible Preferred Stock (the " Series C Convertible Preferred Stock") that was automatically converted during the third quarter of 2019 into approximately 7.5 million shares of the Company's Common Stock when such conversion was approved by the Company's stockholders at the Company's annual stockholders meeting on August 29, 2019. With the conversion of the Series C Convertible Preferred Stock in the third quarter of 2019, as of December 29,2019 Cambridge Holdings beneficially owns approximately 24.2% of the Company's Common Stock after giving effect to the conversion of the Series B Convertible Preferred Stock.

Stock Repurchase Program. On August 2, 2019, the Company's Board of Directors approved a stock repurchase plan ("Repurchase Program") under which the Company may repurchase up to $25.0 million of its outstanding common stock. The authorization became effective August 2, 2019, and will expire 24 months thereafter, unless terminated earlier by the Company's Board of Directors. Purchases under the Repurchase Program may be made from time to time in open market transactions at prevailing market prices or in privately negotiated transactions (including, without limitation, the use of Rule 10b5-1 plans) in compliance with applicable federal securities laws, including Rule 10b-18 under the Securities Exchange Act of 1934, as amended. The Company has no obligation to repurchase stock under the Repurchase Program, and the timing, actual number and value of shares purchased will depend on the Company's stock price, trading volume, general market and economic conditions, and other factors.

During the twelve months ended December 29, 2019, the Company repurchased in open market transactions 553,112 shares of the Company's Common Stock at an average share price of $7.26 for a total cost of $4.0 million under the Repurchase Program.

At December 29, 2019, $21.0 million was available to repurchase shares under the Repurchase Program. Shares repurchased are being held in treasury until they are retired at the discretion of the Board of Directors.