Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
Sep. 25, 2025	Sep. 26, 2024
Statement of Comprehensive Income [Abstract]
Net sales	$ 298,683	$ 276,196
Cost of sales	244,589	229,652
Gross profit	54,094	46,544
Operating expenses:
Selling expenses	17,880	19,839
Administrative expenses	9,197	9,698
Total operating expenses	27,077	29,537
Income from operations	27,017	17,007
Other expense:
Interest expense including $146 and $163 to related parties, respectively	984	516
Rental and miscellaneous expense, net	576	411
Pension expense (excluding service costs)	389	361
Total other expense, net	1,949	1,288
Income before income taxes	25,068	15,719
Income tax expense	6,342	4,060
Net income and comprehensive income	$ 18,726	$ 11,659
Net income per common share - basic	$ 1.6	$ 1
Net income per common share - diluted	$ 1.59	$ 1

Rental and miscellaneous expense, net

No definition available.

Name:	jbss_RentalAndMiscellaneousExpenseNet
Namespace Prefix:	jbss_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.