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Employee Benefit Plans - Description of Investment Policy (Details) - USD ($) $ in Thousands | Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2016
--- | --- | --- | ---
Farmer Brothers Plan |  |  |
Defined Benefit Plan Disclosure |  |  |
Projected benefit obligation | $ 137,175 | $ 146,291 | $ 152,325
Accumulated benefit obligation | 137,175 | 146,291 |
Fair value of plan assets at measurement date | $ 97,211 | $ 97,304 | 91,201
Plan assets by category | 0.00% | 0.00% |
Farmer Brothers Plan | Equity Securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 63,547 | $ 65,270 |
Plan assets by category | 66.00% | 67.00% |
Farmer Brothers Plan | Debt securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 27,608 | $ 26,241 |
Plan assets by category | 28.00% | 27.00% |
Farmer Brothers Plan | Real estate |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 6,056 | $ 5,793 |
Plan assets by category | 6.00% | 6.00% |
Brewmatic Plan |  |  |
Defined Benefit Plan Disclosure |  |  |
Projected benefit obligation | $ 3,724 | $ 4,079 | 4,574
Accumulated benefit obligation | 3,724 | 4,079 |
Fair value of plan assets at measurement date | $ 3,719 | $ 3,115 | 2,989
Plan assets by category | 100.00% | 100.00% |
Brewmatic Plan | Equity Securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 2,431 | $ 2,133 |
Plan assets by category | 66.00% | 69.00% |
Brewmatic Plan | Debt securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 1,056 | $ 793 |
Plan assets by category | 28.00% | 25.00% |
Brewmatic Plan | Real estate |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 232 | $ 189 |
Plan assets by category | 6.00% | 6.00% |
Hourly Employees’ Plan |  |  |
Defined Benefit Plan Disclosure |  |  |
Projected benefit obligation | $ 4,040 | $ 4,329 | 4,329
Accumulated benefit obligation | 4,040 | 4,329 |
Fair value of plan assets at measurement date | $ 3,629 | $ 2,999 | $ 2,447
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 | $ 2,341 | $ 1,973 |
Plan assets by category | 65.00% | 66.00% |
Hourly Employees’ Plan | Debt securities |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 1,065 | $ 851 |
Plan assets by category | 29.00% | 28.00% |
Hourly Employees’ Plan | Real estate |  |  |
Defined Benefit Plan Disclosure |  |  |
Fair value of plan assets at measurement date | $ 223 | $ 175 |
Plan assets by category | 6.00% | 6.00% |

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- Definition Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level. + 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 (e) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan. + 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=82843861&loc=d3e1928-114920 + Details
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- Definition Fair value of assets that have been segregated and restricted to provide pension or postretirement benefits. Assets include, but are not limited to, stocks, bonds, other investments, earnings from investments, and contributions by the employer and employees. + 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=82843861&loc=d3e1928-114920 + Details
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