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. 28, 2023	Jan. 29, 2022	Jan. 28, 2023	Jan. 29, 2022
Class of Stock [Line Items]
Net income	$ 12,322	$ 10,129	$ 23,405	$ 17,457
Distributed and allocated undistributed Net income to unvested restricted shareholders	339	298	644	521
Net income available to Class A and Class B shareholders	11,983	9,831	22,761	16,936
Numerator:
Net income allocated, basic	11,983	9,831	22,761	16,936
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	9,342	7,666	17,743	13,204
Numerator:
Net income allocated, basic	9,342	7,666	17,743	13,204
Conversion of Class B to Class A shares	2,642	2,165	5,017	3,732
Net income allocated, diluted	$ 11,984	$ 9,831	$ 22,760	$ 16,936
Denominator:
Weighted average shares outstanding, basic (in shares)	9,863	9,873	9,863	9,868
Conversion of Class B to Class A shares (in shares)	4,294	4,294	4,294	4,294
Weighted average shares outstanding, diluted (in shares)	14,157	14,167	14,157	14,162
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,642	$ 2,165	$ 5,017	$ 3,732
Numerator:
Net income allocated, basic	2,642	2,165	5,017	3,732
Conversion of Class B to Class A shares	0	0	0	0
Net income allocated, diluted	$ 2,642	$ 2,165	$ 5,017	$ 3,732
Denominator:
Weighted average shares outstanding, basic (in shares)	4,294	4,294	4,294	4,294
Conversion of Class B to Class A shares (in shares)	0	0	0	0
Weighted average shares outstanding, diluted (in shares)	4,294	4,294	4,294	4,294