Organization and Relationships (Details Narrative)						12 Months Ended
	Sep. 21, 2020 USD ($)	Jul. 16, 2020 USD ($) $ / shares shares	Jul. 13, 2020 $ / shares shares	Mar. 06, 2020 USD ($)	Oct. 20, 2017	Dec. 27, 2020 USD ($) Integer	Dec. 29, 2019 USD ($)	Dec. 30, 2018 USD ($)
Ownership percentage, description					The Company completed an initial public offering on October 20, 2017 and issued additional shares of common stock representing 20 percent of its ownership (the "Offering")
Initial public offering percentage					20.00%
Franchising brands and locations, description						The Company owns and franchises nine restaurant brands through various wholly owned subsidiaries: Fatburger, Johnny Rockets, Buffalo's Cafe, Buffalo's Express, Hurricane Grill & Wings, Ponderosa Steakhouses, Bonanza Steakhouses, Yalla Mediterranean and Elevation Burger. Combined, these brands have over 700 locations open and more than 200 under development.
Number of franchise brands | Integer						9
Number of franchise units worldwide | Integer						700
Number of franchises minimum, under development | Integer						200
Loss from operations						$ (15,098,000)	$ 5,918,000
Net loss						(14,860,000)	(1,018,000)
Cash provided by operating activities						(11,484,000)	1,594,000
Stockholders equity						(41,883,000)	$ 5,378,000	$ 5,739,000
Series B Preferred Stock [Member]
Number of warrants to purchase preferred stock | shares		3,600
Warrants purchase price per share | $ / shares		$ 24.95
Underwriting Agreement [Member]
Net proceeds offering amount		$ 8,122,000
Underwriting and offering costs		$ 878,000
Underwriting Agreement [Member] | 2020 Series B Warrants [Member]
Number of warrants to purchase preferred stock | shares			1,800,000
Warrants purchase price per share | $ / shares			$ 5.00
Underwriting Agreement [Member] | Series B Preferred Stock [Member]
Number of shares issued | shares			360,000
Preferred stock percentage			8.25%
Johnny Rockets [Member]
Amount of proceeds used for acquisition	$ 24,730,000
Securitization Notes [Member]
Proceeds from issuance of secured debt	35,371,000			$ 37,389,000
Debt face amount	40,000,000			40,000,000		73,369,000
Repayment of secured debt				26,771,000
Debt outstanding amount	80,000,000
Debt discount	3,200,000			246,000		3,257,000
Debt offering costs	$ 1,429,000			$ 2,365,000		$ 3,374,000