Post-effective amendment to a registration statement that is not immediately effective upon filing

Commitments and Contingencies (Details)

v3.21.2
Commitments and Contingencies (Details)
1 Months Ended 3 Months Ended 4 Months Ended 6 Months Ended 11 Months Ended 12 Months Ended
Dec. 31, 2020
USD ($)
Apr. 30, 2020
USD ($)
Deposit
Feb. 29, 2020
USD ($)
Deposit
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Apr. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
Jun. 30, 2020
USD ($)
Dec. 15, 2020
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Commitments And Contingencies [Line Items]                      
Operating leases, rent expense $ 40,000     $ 891,000 $ 689,000   $ 1,732,000 $ 1,316,000 $ 2,819,000   $ 2,281,000
Assets held for sale 732,000     732,000     732,000     $ 732,000  
Loss contingency, allegations                   A franchisee filed a suit against BFI seeking unspecified damages in connection with plaintiff’s execution of franchise agreements for the development of 11 BurgerFi restaurants in certain specified trade areas in New York and Connecticut.  
Contingent liability 0                 $ 0  
Franchise Agreement Case [Member]                      
Commitments And Contingencies [Line Items]                      
Loss contingency, damages sought value             $ 5,000,000     $ 5,000,000  
Loss contingency, lawsuit filing date             April 2016     April 2016  
Employment Agreement Breach Case [Member]                      
Commitments And Contingencies [Line Items]                      
Loss contingency, lawsuit filing date             December 1, 2019     December 1, 2019  
Loss contingency motion to dismiss lawsuit filing date             February 13, 2020     February 13, 2020  
Employee Termination Case [Member]                      
Commitments And Contingencies [Line Items]                      
Loss contingency, lawsuit filing date             July 8, 2020     July 8, 2020  
Loss contingency, allegations             the former employee was terminated wrongfully by the Company     the former employee was terminated wrongfully by the Company  
BF Dania Beach, LLC [Member]                      
Commitments And Contingencies [Line Items]                      
Aggregate purchase price     $ 1,299,000                
Number of cash deposits | Deposit   3 3                
Cash deposits received   $ 906,500       $ 906,500          
Cash deposits returned to unrelated third-party purchaser           $ 906,500          
Assets held for sale $ 732,000     $ 732,000     $ 732,000     $ 732,000