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. 25, 2025	Jan. 27, 2024	Jan. 25, 2025	Jan. 27, 2024
Class of Stock [Line Items]
Net income	$ 16,896	$ 14,480	$ 29,697	$ 26,066
Distributed and allocated undistributed Net income to unvested restricted shareholders	572	542	1,006	983
Net income available to Class A and Class B shareholders	16,324	13,938	28,691	25,083
Numerator:
Net income allocated, basic	16,324	13,938	28,691	25,083
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	12,924	10,972	22,661	19,752
Numerator:
Net income allocated, basic	12,924	10,972	22,661	19,752
Conversion of Class B to Class A shares	3,400	2,966	6,030	5,331
Net income allocated, diluted	$ 16,324	$ 13,938	$ 28,691	$ 25,083
Denominator:
Weighted average shares outstanding, basic (in shares)	10,182	10,099	10,144	10,123
Conversion of Class B to Class A shares (in shares)	4,125	4,204	4,163	4,204
Weighted average shares outstanding, diluted (in shares)	14,307	14,303	14,307	14,327
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 3,400	$ 2,966	$ 6,030	$ 5,331
Numerator:
Net income allocated, basic	3,400	2,966	6,030	5,331
Conversion of Class B to Class A shares	0	0	0	0
Net income allocated, diluted	$ 3,400	$ 2,966	$ 6,030	$ 5,331
Denominator:
Weighted average shares outstanding, basic (in shares)	4,125	4,204	4,163	4,204
Conversion of Class B to Class A shares (in shares)	0	0	0	0
Weighted average shares outstanding, diluted (in shares)	4,125	4,204	4,163	4,204