NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 25, 2025	Oct. 26, 2024
Class of Stock [Line Items]
Net income	$ 12,002	$ 12,803
Distributed and allocated undistributed Net income to unvested restricted shareholders	385	437
Net income available to Class A and Class B shareholders	11,617	12,366
Numerator:
Net income allocated, basic	11,617	12,366
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	9,200	9,737
Numerator:
Net income allocated, basic	9,200	9,737
Conversion of Class B to Class A shares	2,417	2,629
Net income allocated, diluted	$ 11,617	$ 12,366
Denominator:
Weighted average shares outstanding, basic (in shares)	10,200	10,106
Conversion of Class B to Class A shares (in shares)	4,125	4,200
Weighted average shares outstanding, diluted (in shares)	14,325	14,306
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,417	$ 2,629
Numerator:
Net income allocated, basic	2,417	2,629
Conversion of Class B to Class A shares	0	0
Net income allocated, diluted	$ 2,417	$ 2,629
Denominator:
Weighted average shares outstanding, basic (in shares)	4,125	4,200
Conversion of Class B to Class A shares (in shares)	0	0
Weighted average shares outstanding, diluted (in shares)	4,125	4,200