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Basis of Presentation and Summary of Significant Accounting Policies - Fair Value Measurements (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Mar. 25, 2020
Dec. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net $ 80,059   $ 79,642
Right-of-Use Assets, Net   $ 543  
Operating Lease, Impairment Loss   500  
Impairment of property and equipment 240 1,377  
Impairment of Right-of-Use Assets 63    
Fair Value, Measurements, Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability, Fair Value, Gross Liability 946   1,139
Fair Value, Measurements, Recurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability, Fair Value, Gross Liability 0    
Fair Value, Measurements, Recurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability, Fair Value, Gross Liability 946   $ 1,139
Fair Value, Measurements, Recurring | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Derivative Liability, Fair Value, Gross Liability 0    
Fair Value, Measurements, Nonrecurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net   39  
Right-of-Use Assets, Net 1,147 926  
Fair Value, Measurements, Nonrecurring | Level 1      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 0    
Right-of-Use Assets, Net 0    
Fair Value, Measurements, Nonrecurring | Level 2      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net 0    
Right-of-Use Assets, Net 0    
Fair Value, Measurements, Nonrecurring | Level 3      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Property and equipment, net   39  
Right-of-Use Assets, Net $ 1,147 $ 926