Annual report pursuant to Section 13 and 15(d)

Income Taxes - Narrative (Details)

v3.20.4
Income Taxes - Narrative (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 26, 2020
Dec. 28, 2019
Dec. 29, 2018
Dec. 30, 2017
Income Tax Contingency [Line Items]        
Valuation allowance, deferred tax assets $ 1,471 $ 2,586    
Valuation allowance, decrease (1,038) 835 $ 7,200  
Unrecognized tax benefits 1,101 $ 1,101 $ 1,101 $ 1,101
Federal        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 134,347      
Foreign        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 30,717      
Tax credit carryforwards 822      
Valuation allowance, tax credit carryforward 822      
State        
Income Tax Contingency [Line Items]        
Operating loss carryforwards 3,806      
Valuation allowance, deferred tax assets 439      
General Business Tax Credit Carryforwards        
Income Tax Contingency [Line Items]        
Tax credit carryforwards 891      
Valuation allowance, tax credit carryforward $ 210