NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 24, 2026	Jan. 25, 2025	Jan. 24, 2026	Jan. 25, 2025
Class of Stock [Line Items]
Net income	$ 17,872	$ 16,896	$ 29,873	$ 29,697
Distributed and allocated undistributed Net income to unvested restricted shareholders	572	572	956	1,006
Net income available to Class A and Class B shareholders	17,300	16,324	28,917	28,691
Numerator:
Net income allocated, basic	17,300	16,324	28,917	28,691
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	13,701	12,924	22,901	22,661
Numerator:
Net income allocated, basic	13,701	12,924	22,901	22,661
Conversion of Class B to Class A shares	3,599	3,400	6,016	6,030
Net income allocated, diluted	$ 17,300	$ 16,324	$ 28,917	$ 28,691
Denominator:
Weighted average shares outstanding, basic (in shares)	10,200	10,182	10,200	10,144
Conversion of Class B to Class A shares (in shares)	4,125	4,125	4,125	4,163
Weighted average shares outstanding, diluted (in shares)	14,325	14,307	14,325	14,307
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 3,599	$ 3,400	$ 6,016	$ 6,030
Numerator:
Net income allocated, basic	3,599	3,400	6,016	6,030
Conversion of Class B to Class A shares	0	0	0	0
Net income allocated, diluted	$ 3,599	$ 3,400	$ 6,016	$ 6,030
Denominator:
Weighted average shares outstanding, basic (in shares)	4,125	4,125	4,125	4,163
Conversion of Class B to Class A shares (in shares)	0	0	0	0
Weighted average shares outstanding, diluted (in shares)	4,125	4,125	4,125	4,163