NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 28, 2023	Oct. 29, 2022
Class of Stock [Line Items]
Net income	$ 11,585	$ 11,081
Distributed and allocated undistributed Net income to unvested restricted shareholders	440	304
Net income available to Class A and Class B shareholders	11,145	10,777
Numerator:
Net income allocated, basic	11,145	10,777
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	8,782	8,402
Numerator:
Net income allocated, basic	8,782	8,402
Conversion of Class B to Class A shares	2,363	2,376
Net income allocated, diluted	$ 11,145	$ 10,778
Denominator:
Weighted average shares outstanding, basic (in shares)	10,146	9,863
Conversion of Class B to Class A shares (in shares)	4,204	4,294
Weighted average shares outstanding, diluted (in shares)	14,350	14,157
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,363	$ 2,376
Numerator:
Net income allocated, basic	2,363	2,376
Conversion of Class B to Class A shares	0	0
Net income allocated, diluted	$ 2,363	$ 2,376
Denominator:
Weighted average shares outstanding, basic (in shares)	4,204	4,294
Conversion of Class B to Class A shares (in shares)	0	0
Weighted average shares outstanding, diluted (in shares)	4,204	4,294