NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 26, 2024	Oct. 28, 2023
Class of Stock [Line Items]
Net income	$ 12,803	$ 11,585
Distributed and allocated undistributed Net income to unvested restricted shareholders	437	440
Net income available to Class A and Class B shareholders	12,366	11,145
Numerator:
Net income allocated, basic	12,366	11,145
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	9,737	8,782
Numerator:
Net income allocated, basic	9,737	8,782
Conversion of Class B to Class A shares	2,629	2,363
Net income allocated, diluted	$ 12,366	$ 11,145
Denominator:
Weighted average shares outstanding, basic (in shares)	10,106	10,146
Conversion of Class B to Class A shares (in shares)	4,200	4,204
Weighted average shares outstanding, diluted (in shares)	14,306	14,350
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,629	$ 2,363
Numerator:
Net income allocated, basic	2,629	2,363
Conversion of Class B to Class A shares	0	0
Net income allocated, diluted	$ 2,629	$ 2,363
Denominator:
Weighted average shares outstanding, basic (in shares)	4,200	4,204
Conversion of Class B to Class A shares (in shares)	0	0
Weighted average shares outstanding, diluted (in shares)	4,200	4,204