NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Oct. 29, 2022	Oct. 30, 2021
Class of Stock [Line Items]
Net income	$ 11,081	$ 7,328
Distributed and allocated undistributed Net income to unvested restricted shareholders	304	224
Net income available to Class A and Class B shareholders	10,777	7,104
Numerator:
Net income allocated, basic	10,777	7,104
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	8,402	5,538
Numerator:
Net income allocated, basic	8,402	5,538
Conversion of Class B to Class A shares	2,376	1,566
Net income allocated, diluted	$ 10,778	$ 7,104
Denominator:
Weighted average shares outstanding, basic (in shares)	9,863	9,864
Conversion of Class B to Class A shares (in shares)	4,294	4,294
Weighted average shares outstanding, diluted (in shares)	14,157	14,158
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,376	$ 1,566
Numerator:
Net income allocated, basic	2,376	1,566
Conversion of Class B to Class A shares	0	0
Net income allocated, diluted	$ 2,376	$ 1,566
Denominator:
Weighted average shares outstanding, basic (in shares)	4,294	4,294
Conversion of Class B to Class A shares (in shares)	0	0
Weighted average shares outstanding, diluted (in shares)	4,294	4,294