Annual report pursuant to Section 13 and 15(d)

Nature of Operations and Summary of Significant Accounting Policies - Summary of Revenue Disaggregated According to Timing of Transfer of Goods or Services (Details)

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Nature of Operations and Summary of Significant Accounting Policies - Summary of Revenue Disaggregated According to Timing of Transfer of Goods or Services (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
Royalty - Brand Development and Co-op [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 74 1,441 1,720
Initial Distinct Services [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 8 90 204
Initial Franchise Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 17 272 254
Revenue Recognized at a Point in Time [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 1,687 32,306 33,301
Revenue Recognized at a Point in Time [Member] | Restaurant Sales [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 1,326 23,139 22,473
Revenue Recognized at a Point in Time [Member] | BF Commissary Sales [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 24 827 710
Revenue Recognized at a Point in Time [Member] | Royalty and Other Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 255 6,116 7,369
Revenue Recognized at a Point in Time [Member] | Terminated Franchise Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales   693 825
Revenue Recognized at a Point in Time [Member] | Royalty - Brand Development and Co-op [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 74 1,441 1,720
Revenue Recognized at a Point in Time [Member] | Initial Distinct Services [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 8 90 204
Revenue Recognized over Time [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales 17 272 254
Revenue Recognized over Time [Member] | Initial Franchise Fees [Member]      
Disaggregation Of Revenue [Line Items]      
Net sales $ 17 $ 272 $ 254