Basis of Presentation	3 Months Ended
Sep. 29, 2011
Basis of Presentation [Abstract]
Basis of Presentation	Note 1 — Basis of Presentation As used herein, unless the context otherwise indicates, the terms “Company”, “we”, “us”, “our” or “our Company” collectively refer to John B. Sanfilippo & Son, Inc. and JBSS Properties, LLC, a wholly-owned subsidiary of John B. Sanfilippo & Son, Inc. We were incorporated under the laws of the State of Delaware in 1979 as the successor by merger to an Illinois corporation that was incorporated in 1959. Our fiscal year ends on the final Thursday of June each year, and typically consists of fifty-two weeks (four thirteen-week quarters). References herein to fiscal 2012 are to the fiscal year ending June 28, 2012. References herein to fiscal 2011 are to the fiscal year ended June 30, 2011 which consisted of fifty-three weeks (the fourth quarter consisting of fourteen weeks). References herein to the first quarter of fiscal 2012 are to the quarter ended September 29, 2011. References herein to the first quarter of fiscal 2011 are to the quarter ended September 23, 2010. The accompanying unaudited financial statements fairly present the consolidated statements of operations and comprehensive income, consolidated balance sheets and consolidated statements of cash flows, and reflect all adjustments, consisting only of normal recurring adjustments which are necessary for the fair presentation of the results of the interim periods. The interim results of operations are not necessarily indicative of the results to be expected for a full year. The balance sheet data as of June 30, 2011 was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States of America. Accordingly, these unaudited financial statements and related notes should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2011 Annual Report on Form 10-K for the fiscal year ended June 30, 2011.

Basis of Presentation

3 Months Ended

Sep. 29, 2011

Note 1 — Basis of Presentation

As used herein, unless the context otherwise indicates, the terms “Company”, “we”, “us”, “our” or “our Company” collectively refer to John B. Sanfilippo & Son, Inc. and JBSS Properties, LLC, a wholly-owned subsidiary of John B. Sanfilippo & Son, Inc. We were incorporated under the laws of the State of Delaware in 1979 as the successor by merger to an Illinois corporation that was incorporated in 1959. Our fiscal year ends on the final Thursday of June each year, and typically consists of fifty-two weeks (four thirteen-week quarters). References herein to fiscal 2012 are to the fiscal year ending June 28, 2012. References herein to fiscal 2011 are to the fiscal year ended June 30, 2011 which consisted of fifty-three weeks (the fourth quarter consisting of fourteen weeks). References herein to the first quarter of fiscal 2012 are to the quarter ended September 29, 2011. References herein to the first quarter of fiscal 2011 are to the quarter ended September 23, 2010.

The accompanying unaudited financial statements fairly present the consolidated statements of operations and comprehensive income, consolidated balance sheets and consolidated statements of cash flows, and reflect all adjustments, consisting only of normal recurring adjustments which are necessary for the fair presentation of the results of the interim periods.

The interim results of operations are not necessarily indicative of the results to be expected for a full year. The balance sheet data as of June 30, 2011 was derived from audited financial statements, but does not include all disclosures required by generally accepted accounting principles in the United States of America. Accordingly, these unaudited financial statements and related notes should be read in conjunction with the audited consolidated financial statements and notes thereto included in our 2011 Annual Report on Form 10-K for the fiscal year ended June 30, 2011.