Debt (Details Narrative) - USD ($)
2 Months Ended 3 Months Ended
Mar. 06, 2020
Jul. 24, 2019
Jun. 19, 2019
Jan. 29, 2019
Feb. 21, 2020
Mar. 29, 2020
Mar. 31, 2019
Interest expense           $ 1,622,000 $ 1,686,000
Securitization Notes [Member]              
Debt principle amount $ 40,000,000         37,309,000  
Interest expense           288,000  
Amortization of debt offering costs           33,000  
Debt discount 246,000            
Debt offering costs 2,440,000         2,450,000  
Proceeds from issuance of debt 37,314,000            
Original issue discount           241,000  
Amortization of original issue discount           $ 5,000  
Effective interest rate percentage           9.30%  
Elevation Burger [Member] | Elevation Note [Member]              
Debt maturity date     Jul. 31, 2026        
Debt, interest rate percentage     6.00%     13.10%  
Interest expense           $ 189,000  
Amortization of debt offering costs           3,000  
Principal amount of note     $ 7,509,816        
Share price     $ 12.00        
Debt outstanding amount     $ 6,185,000     5,772,000  
Debt discount     1,295,000     1,078,000  
Debt offering costs     30,000     63,000  
Amortization of debt discount           71,000  
Amortization of payments per month           $ 110,000  
Loan and Security Agreement [Member]              
Debt, interest rate percentage           44.30% 20.90%
Increase in borrowings     $ 3,500,000        
Payment for extension fee   $ 500,000          
Late fee   $ 400,000          
Debt, penalties and fees           $ 650,000  
Interest expense           1,783,000 $ 720,000
Amortization of debt offering costs           $ 212,000 $ 32,000
Loan and Security Agreement [Member] | Securitization Notes [Member]              
Debt outstanding amount 26,771,000            
Loan and Security Agreement [Member] | Lion Warrant [Member]              
Warrant extended date, description   Extended the date on which the Lion Warrant was initially exercisable from October 1, 2019 to June 30, 2020, which coincided with the maturity date of the loans made under the Loan Agreement.          
Loan and Security Agreement [Member] | Lion Fund, L.P. and The Lion Fund II, L.P [Member]              
Proceeds from loan       $ 20,000,000      
Debt maturity date       Jun. 30, 2020      
Debt, interest rate percentage       20.00%      
Warrants issued to purchase shares       1,167,404      
Exercise price per share       $ 0.01      
Loan and Security Agreement [Member] | Lion Fund, L.P. and The Lion Fund II, L.P [Member] | FB Lending, LLC [Member]              
Repayment of debt       $ 16,000,000      
Original beginning warrant exercise date       Oct. 01, 2019      
Increase in interest rate       5.00%      
Lion Loan and Security Agreement [Member]              
Repayment of debt 26,771,000            
Debt maturity date         Jan. 06, 2020    
Payment for extension fee         $ 650,000    
Debt principle amount 24,000,000            
Accrued interest 2,120,000            
Debt, penalties and fees $ 651,000            
Management Agreement [Member] | Securitization Notes [Member]              
Debt description The Management Agreement provides for a management fee payable monthly by FAT Royalty to the Company in the amount of $200,000, subject to three percent (3%) annual increases (the “Management Fee”). The primary responsibilities of the manager are to perform certain franchising, distribution, intellectual property and operational functions on behalf of the FAT Brands Franchise Entities pursuant to the Management Agreement.