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Income Taxes (Details)
12 Months Ended
Aug. 26, 2020
USD ($)
state
Aug. 28, 2019
USD ($)
Income Taxes [Line Items]    
General business tax credits carryovers to future years $ 12,100,000  
Tax credit carryforward utilization period 20 years  
Federal taxable income $ 19,300,000 $ 5,100,000
Number of states which the company has income tax filing requirements (more than) | state 30  
Federal income tax liability $ 357,000 469,000
Interest associated with unrecognized benefits 0  
Federal Income Tax Authority    
Income Taxes [Line Items]    
Payments of federal income taxes 0 0
State Income Tax Authority    
Income Taxes [Line Items]    
Federal income tax liability $ 400,000 $ 400,000