NET INCOME PER SHARE - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 29, 2023	Apr. 30, 2022
Class of Stock [Line Items]
Net income (loss)	$ 11,017	$ (3,231)	$ 34,422	$ 14,227
Distributed and allocated undistributed Net income (loss) to unvested restricted shareholders	369	(93)	1,014	429
Net income available to Class A and Class B shareholders	10,648	(3,138)	33,408	13,798
Numerator:
Net income (loss) allocated, basic	10,648	(3,138)	33,408	13,798
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	8,311	(2,447)	26,055	10,757
Numerator:
Net income (loss) allocated, basic	8,311	(2,447)	26,055	10,757
Conversion of Class B to Class A shares	2,336	(691)	7,354	3,041
Effect of share-based compensation on allocated net (loss) income		(19)		0
Net income (loss) allocated, diluted	$ 10,647	$ (3,157)	$ 33,409	$ 13,798
Denominator:
Weighted average shares outstanding, basic (in shares)	9,863	9,876	9,863	9,871
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	14,170	14,157	14,165
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,336	$ (691)	$ 7,354	$ 3,041
Numerator:
Net income (loss) allocated, basic	2,336	(691)	7,354	3,041
Conversion of Class B to Class A shares	0	0	0	0
Effect of share-based compensation on allocated net (loss) income		(14)		0
Net income (loss) allocated, diluted	$ 2,336	$ (705)	$ 7,354	$ 3,041
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