Employee Benefit Plans - Description of Investment Policy (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	$ 133,136	$ 126,205	$ 124,828
Accumulated benefit obligation	133,136	126,205
Fair value of plan assets at measurement date	98,426	88,097	82,110
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	53,355	58,681
Plan assets by category	54.00%	67.00%
Farmer Brothers Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	35,035	24,822
Plan assets by category	36.00%	28.00%
Farmer Brothers Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	10,036	4,594
Plan assets by category	10.00%	5.00%
Brewmatic Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	3,991	3,946	4,022
Accumulated benefit obligation	3,991	3,946
Fair value of plan assets at measurement date	3,435	3,063	2,718
Plan assets by category	100.00%	100.00%
Brewmatic Plan \| Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	1,861	2,059
Plan assets by category	54.00%	67.00%
Brewmatic Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	1,223	843
Plan assets by category	36.00%	28.00%
Brewmatic Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	351	161
Plan assets by category	10.00%	5.00%
Hourly Employees' Plan
Defined Benefit Plan Disclosure
Projected benefit obligation	2,619	2,056	1,520
Accumulated benefit obligation	2,619	2,056
Fair value of plan assets at measurement date	1,629	1,248	1,013
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	884	811
Plan assets by category	54.00%	65.00%
Hourly Employees' Plan \| Debt Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	579	375
Plan assets by category	36.00%	30.00%
Hourly Employees' Plan \| Real Estate
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 166	$ 62
Plan assets by category	10.00%	5.00%

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=28361610&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=28361610&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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- Definition

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 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: 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=29635418&loc=d3e12355-114930

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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=28361610&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)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

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