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CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares
Jan. 23, 2021
Jul. 25, 2020
Preferred stock shares authorized (in shares) 10,000,000 10,000,000
Preferred stock shares issued (in shares) 0 0
Common Class A    
Common stock shares authorized (in shares) 20,000,000 20,000,000
Common stock shares issued (in shares) 10,985,000 10,985,000
Treasury shares 726,000 726,000
Common Class B    
Common stock shares authorized (in shares) 20,000,000 20,000,000
Common stock shares issued (in shares) 4,294,000 4,294,000
Common stock shares outstanding (in shares) 4,294,000 4,294,000