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CONSOLIDATED CONDENSED BALANCE SHEETS (Parenthetical) - USD ($)
Jun. 26, 2021
Dec. 26, 2020
CONSOLIDATED BALANCE SHEETS    
Receivables, allowance for doubtful accounts $ 1,000 $ 800
Unamortized debt issuance costs - Current 13,900 13,900
Unamortized debt issuance costs - Noncurrent $ 47,900 $ 54,800
Common stock, par value (in dollars per share) $ 0 $ 0
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 3,668,019 3,756,028
Common stock, shares outstanding 3,668,019 3,756,028