Business Acquisitions Business Acquisition-Additional Details (Details)		3 Months Ended
Jun. 23, 2017 USD ($)	Sep. 09, 2017 USD ($) business
Unified Grocers, Inc.
Business Acquisition [Line Items]
Weighted average useful life of acquired intangible assets (in years)	15 years
Limited Liability Company
Business Acquisition [Line Items]
Business acquisition, percentage of voting interests acquired (as a percentage)		100.00%
Total purchase price		$ 5,000,000
Number of businesses acquired \| business		3
Unified Grocers, Inc.
Business Acquisition [Line Items]
Payments to acquire businesses	$ 390
Business acquisition, percentage of voting interests acquired (as a percentage)	100.00%
Integration related costs		$ 27
Unified Grocers, Inc. \| Debt
Business Acquisition [Line Items]
Payments to acquire businesses	$ 276
Unified Grocers, Inc. \| Common Stock
Business Acquisition [Line Items]
Payments to acquire businesses	$ 114

Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

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-Topic 805
-SubTopic 30
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Costs incurred to effect a business combination which have been expensed during the period. Such costs could include business integration costs, systems integration and conversion costs, and severance and other employee-related costs.

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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Investing Activities
-URI http://asc.fasb.org/extlink&oid=6516133

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