Annual report pursuant to Section 13 and 15(d)

Nature of Operations and Summary of Significant Accounting Policies - Summary of Revenue Recognized Disaggregated by Type (Details)

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Nature of Operations and Summary of Significant Accounting Policies - Summary of Revenue Recognized Disaggregated by Type (Details) - USD ($)
$ in Thousands
 1 Months Ended 11 Months Ended 12 Months Ended
Dec. 31, 2020
Dec. 15, 2020
Dec. 31, 2019
Disaggregation Of Revenue [Line Items]      
Net sales $ 1,704 $ 32,578 $ 33,555
Restaurant Sales [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 1,326 23,139 22,473
BF Commissary Sales [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 24 827 710
Sales-based Royalties [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 255 5,366 6,805
Rebate Royalties [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales   750 564
Royalty - Brand Development and Co-op [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 74 1,441 1,720
Initial Franchise Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 17 272 254
Initial Distinct Services [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales $ 8 90 204
Other Revenue - Terminations of Franchises [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales   $ 693 $ 825