Stockholder's Equity	12 Months Ended
Dec. 31, 2017
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 Series A Convertible Preferred Stock pursuant to a certificate of designation. These shares are convertible into 9,414,580 shares of Carrols Restaurant Group Common Stock ("Carrols Common Stock"). The Preferred Stock ranks senior to Carrols Common Stock with respect to rights on liquidation, winding-up and dissolution of Carrols Restaurant Group. The 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. BKC also has certain approval and voting rights as set forth in the certificate of designation for the Preferred Stock so long as it owns greater than 10.0% of the outstanding shares of Carrols Common Stock (on an as-converted basis). The Preferred Stock will vote with the Company's common stock on an as converted basis and provides for the right of BKC 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 Preferred Stock held by BKC are then convertible constitutes less than 14.5% of the total number of outstanding shares of common stock and (b) one member to the Company's board of directors until BKC owns Preferred Stock (on an as converted basis) of less than 10.0% of the total number of outstanding shares of common stock.

Stockholders' Equity

Preferred Stock. In 2012, Carrols Restaurant Group issued to BKC 100 shares of Series A Convertible Preferred Stock pursuant to a certificate of designation. These shares are convertible into 9,414,580 shares of Carrols Restaurant Group Common Stock ("Carrols Common Stock").

The Preferred Stock ranks senior to Carrols Common Stock with respect to rights on liquidation, winding-up and dissolution of Carrols Restaurant Group. The 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.

BKC also has certain approval and voting rights as set forth in the certificate of designation for the Preferred Stock so long as it owns greater than 10.0% of the outstanding shares of Carrols Common Stock (on an as-converted basis). The Preferred Stock will vote with the Company's common stock on an as converted basis and provides for the right of BKC 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 Preferred Stock held by BKC are then convertible constitutes less than 14.5% of the total number of outstanding shares of common stock and (b) one member to the Company's board of directors until BKC owns Preferred Stock (on an as converted basis) of less than 10.0% of the total number of outstanding shares of common stock.