Employee Benefit Plans - Description of Investment Policy (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 136,962	$ 133,136	$ 126,205
Accumulated benefit obligation	136,962	133,136
Fair value of plan assets at measurement date	$ 94,815	$ 98,426	88,097
Plan assets by category	100.00%	100.00%
Farmer Brothers Plan \| Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 47,340	$ 53,355
Plan assets by category	50.00%	54.00%
Farmer Brothers Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 37,789	$ 35,035
Plan assets by category	40.00%	36.00%
Farmer Brothers Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 9,686	$ 10,036
Plan assets by category	10.00%	10.00%
Brewmatic Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 4,064	$ 3,991	3,946
Accumulated benefit obligation	4,064	3,991
Fair value of plan assets at measurement date	$ 3,291	$ 3,435	3,063
Plan assets by category	100.00%	100.00%
Brewmatic Plan \| Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 1,638	$ 1,861
Plan assets by category	50.00%	54.00%
Brewmatic Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 1,322	$ 1,223
Plan assets by category	40.00%	36.00%
Brewmatic Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 331	$ 351
Plan assets by category	10.00%	10.00%
Hourly Employees' Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 3,145	$ 2,619	2,056
Accumulated benefit obligation	3,145	2,619
Fair value of plan assets at measurement date	$ 2,104	$ 1,629	$ 1,248
Plan assets by category	100.00%	100.00%
Hourly Employees' Plan \| Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 1,050	$ 884
Plan assets by category	50.00%	54.00%
Hourly Employees' Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 839	$ 579
Plan assets by category	40.00%	36.00%
Hourly Employees' Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 215	$ 166
Plan assets by category	10.00%	10.00%

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503844

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Projected Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6522206

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Postretirement Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503904

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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.

+ References

No definition available.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(1)

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