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. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024
Class of Stock [Line Items]
Net income	$ 11,161	$ 8,966	$ 40,858	$ 35,030
Distributed and allocated undistributed Net income to unvested restricted shareholders	364	330	1,371	1,310
Net income available to Class A and Class B shareholders	10,797	8,636	39,487	33,720
Numerator:
Net income allocated, basic	10,797	8,636	39,487	33,720
Common Class A
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	8,550	6,798	31,210	26,550
Numerator:
Net income allocated, basic	8,550	6,798	31,210	26,550
Conversion of Class B to Class A shares	2,247	1,838	8,277	7,170
Net income allocated, diluted	$ 10,797	$ 8,636	$ 39,487	$ 33,720
Denominator:
Weighted average shares outstanding, basic (in shares)	10,190	10,092	10,160	10,112
Conversion of Class B to Class A shares (in shares)	4,125	4,204	4,150	4,204
Weighted average shares outstanding, diluted (in shares)	14,315	14,296	14,310	14,316
Common Class B
Class of Stock [Line Items]
Net income available to Class A and Class B shareholders	$ 2,247	$ 1,838	$ 8,277	$ 7,170
Numerator:
Net income allocated, basic	2,247	1,838	8,277	7,170
Conversion of Class B to Class A shares	0	0	0	0
Net income allocated, diluted	$ 2,247	$ 1,838	$ 8,277	$ 7,170
Denominator:
Weighted average shares outstanding, basic (in shares)	4,125	4,204	4,150	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	4,150	4,204