CONSOLIDATED BALANCE SHEETS (Parenthetical) - shares	Jul. 30, 2016	Jul. 25, 2015
Preferred stock shares authorized (in shares)	10,000,000	10,000,000
Preferred stock shares issued (in shares)	0
Class A Common Stock
Common stock shares authorized (in shares)	20,000,000	20,000,000
Common stock shares issued (in shares)	10,190,000	10,192,000
Treasury stock shares (in shares)	353,000	343,000
Class B Common Stock
Common stock shares authorized (in shares)	20,000,000	20,000,000
Common stock shares issued (in shares)	4,319,000	4,319,000
Common Stock, Shares, Outstanding	4,319,000	4,319,000