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. 27, 2024	Jan. 28, 2023	Jan. 27, 2024	Jan. 28, 2023
Class of Stock [Line Items]
Net income	$ 14,480	$ 12,322	$ 26,066	$ 23,405
Distributed and allocated undistributed Net income to unvested restricted shareholders	542	339	983	644
Net income available to Class A and Class B shareholders	13,938	11,983	25,083	22,761
Numerator:
Net income allocated, basic	13,938	11,983	25,083	22,761
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	10,972	9,342	19,752	17,743
Numerator:
Net income allocated, basic	10,972	9,342	19,752	17,743
Conversion of Class B to Class A shares	2,966	2,642	5,331	5,017
Net income allocated, diluted	$ 13,938	$ 11,984	$ 25,083	$ 22,760
Denominator:
Weighted average shares outstanding, basic (in shares)	10,099	9,863	10,123	9,863
Conversion of Class B to Class A shares (in shares)	4,204	4,294	4,204	4,294
Weighted average shares outstanding, diluted (in shares)	14,303	14,157	14,327	14,157
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,966	$ 2,642	$ 5,331	$ 5,017
Numerator:
Net income allocated, basic	2,966	2,642	5,331	5,017
Conversion of Class B to Class A shares	0	0	0	0
Net income allocated, diluted	$ 2,966	$ 2,642	$ 5,331	$ 5,017
Denominator:
Weighted average shares outstanding, basic (in shares)	4,204	4,294	4,204	4,294
Conversion of Class B to Class A shares (in shares)	0	0	0	0
Weighted average shares outstanding, diluted (in shares)	4,204	4,294	4,204	4,294