General form of registration statement for all companies including face-amount certificate companies

Stockholders' Equity (Successor) (Details)

v3.21.1
Stockholders' Equity (Successor) (Details)
 1 Months Ended 12 Months Ended
Mar. 13, 2018
$ / shares
shares
Feb. 28, 2021
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 31, 2020
USD ($)
$ / shares
shares
Dec. 16, 2020
USD ($)
$ / shares
Dec. 31, 2019
shares
Class of Stock [Line Items]            
Common Stock, issued     17,541,838 17,541,838    
Common Stock, par value | $ / shares     $ 0.0001 $ 0.0001    
Common stock voting rights       Holders of the Company’s common stock are entitled to one vote for each share    
Common stock shares outstanding     17,541,838 17,541,838    
Common stock shares authorized     100,000,000 100,000,000    
Warrants Outstanding     15,095,000 15,095,000    
Preferred stock, authorized     10,000,000 10,000,000    
Preferred stock, par value | $ / shares     $ 0.0001 $ 0.0001    
Preferred stock, outstanding     0 0   0
Preferred stock, issued     0 0   0
Number of shares issued under purchase option       750,000    
Shares purchase price, per share (in dollars per share) | $ / shares     $ 10.00 $ 10.00    
Total unrecognized compensation cost related to unvested restricted stock | $     $ 19,000,000 $ 19,000,000    
Share-based Payment Arrangement, Expense | $     $ 818,000      
Warrants exercise price | $ / shares     $ 11.50 $ 11.50    
Warrants exercisable period       30 days    
Warrant outstanding | $     $ 16,516,000 $ 16,516,000 $ 22,113,000  
Gain or loss due to change in the fair value of warrants | $     $ 5,597,000      
Maximum [Member]            
Class of Stock [Line Items]            
Total unrecognized compensation cost related to unvested restricted stock or performance stock awards to be recognized weighted average period       5 years    
Minimum [Member]            
Class of Stock [Line Items]            
Total unrecognized compensation cost related to unvested restricted stock or performance stock awards to be recognized weighted average period       4 years    
Public Warrants [member]            
Class of Stock [Line Items]            
Warrants Outstanding     11,500,000 11,500,000    
UPO warrants [member]            
Class of Stock [Line Items]            
Warrants Outstanding     750,000 750,000    
Private Warrants [member]            
Class of Stock [Line Items]            
Warrants Outstanding     445,000 445,000    
Warrants exercise price | $ / shares     $ 4.60 $ 4.60 $ 6.15  
Working Capital Warrants [member]            
Class of Stock [Line Items]            
Warrants Outstanding     150,000 150,000    
Private Placement Warrants [member]            
Class of Stock [Line Items]            
Warrants Outstanding     3,000,000 3,000,000    
Restricted Stock [Member]            
Class of Stock [Line Items]            
Fair value of Non vested options vested | $       $ 785,000    
Market Condition Awards [Member]            
Class of Stock [Line Items]            
Total unrecognized compensation cost related to unvested restricted stock | $     $ 927,000 $ 927,000    
Total unrecognized compensation cost related to unvested restricted stock or performance stock awards to be recognized weighted average period       2 years 11 months 15 days    
Share-based Payment Arrangement, Expense | $     $ 33,000 $ 33,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares     $ 10.45 $ 10.45    
Performance Condition Awards [Member]            
Class of Stock [Line Items]            
Total unrecognized compensation cost related to unvested restricted stock | $     $ 0 $ 0    
Share-based Payment Arrangement, Expense | $     $ 0      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | $ / shares     $ 15.70 $ 15.70    
2020 Plan            
Class of Stock [Line Items]            
Aggregate number of Shares that may be issued     (2,000,000) (2,000,000)    
Options expiration period       10 years    
Percentage of increase of common stock outstanding       (5.00%)    
Common stock available for future grants     700,000 700,000    
BurgerFi International LLC [Member]            
Class of Stock [Line Items]            
Description of sale price of common stock         •   in whole and not in part;     •   at a price of $0.01 per warrant;     •   at any time during the exercise period;     •   upon a minimum of 30 days’ prior written notice of redemption; and     •   if, and only if, the last sale price of the Company’s common stock equals or exceeds $18.00 per share for any 20 trading days within a 30-trading day period ending on the third business day prior to the date on which the Company sends the notice of redemption to the warrant holders.     •   if, and only if, there is a current registration statement in effect with respect to the shares of common stock underlying such warrants.    
Business combination, Number of shares issued       6,603,774    
Warrant [Member]            
Class of Stock [Line Items]            
Warrant term       5 years    
Share Price | $ / shares     $ 13.69 $ 13.69 $ 15.70  
IPO [Member]            
Class of Stock [Line Items]            
Number of shares issued under purchase option 750,000          
Shares purchase price, per share (in dollars per share) | $ / shares $ 10.00          
Option expiry date Mar. 17, 2023          
Subsequent Event [member]            
Class of Stock [Line Items]            
Conversion of common shares   283,670        
Conversion ratio   2,021   0.420251852    
Subsequent Event [member] | IPO [Member]            
Class of Stock [Line Items]            
Conversion of common shares   675,000        
UPO Units [Member] | Subsequent Event [member]            
Class of Stock [Line Items]            
Conversion of common shares   675,000