Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Jun. 30, 2021	Jun. 30, 2020
Non-qualified Stock Options with Time-based Vesting (NQO) [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options exercised (shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Exercised (in US$ per share)	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Life, Beginning balance	5 years 2 months 1 day	6 years 2 months 15 days
Weighted Average Remaining Life, Ending balance	5 years 2 months 1 day	6 years 2 months 15 days
Aggregate Intrinsic Value, Beginning balance	$ 706	$ 55
Aggregate intrinsic value, exercised	0
Aggregate Intrinsic Value, Ending balance	$ 706	$ 55
Non-qualified Stock Options with Time-based Vesting (NQO) [Member] \| Vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Beginning balance (in shares)	528,958
Number of options granted (shares)	29,761
Number of options cancelled/forfeited (shares)	(34,319)
Number of options expired (shares)	(11,075)
Number of options - Ending balance (in shares)	513,325	528,958
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Beginning balance (in US$ per share)	$ 13.92
Weighted average purchase price (in US$ per share)	6.72
Weighted Average Exercise Price, Cancelled/Forfeited (in US$ per share)	17.14
Weighted Average Exercise Price, Ending balance (in US$ per share)	$ 13.06	$ 13.92
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options, Vested and exercisable, Outstanding (in shares)	179,296
Options, Vested and exercisable, Weighted Average Exercise Price (in US$ per share)	$ 14.61
Options, Vested and exercisable, Aggregate Intrinsic Value	$ 174
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	4 years 8 months 19 days
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price	$ 24.80
PNQs
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options exercised (shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Exercised (in US$ per share)	$ 0
PNQs \| Farmer Bros. Co. Amended and Restated 2007 Long-term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Beginning balance (in shares)	13,630
Number of options cancelled/forfeited (shares)	0
Number of options expired (shares)	(1,880)
Number of options - Ending balance (in shares)	11,750	13,630
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Weighted Average Exercise Price, Beginning balance (in US$ per share)	$ 28.60
Weighted Average Exercise Price, Cancelled/Forfeited (in US$ per share)	0
Weighted Average Exercise Price, Ending balance (in US$ per share)	$ 29.76	$ 28.60
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Weighted Average Remaining Life, Beginning balance		2 years 4 months 9 days
Weighted Average Remaining Life, Ending balance		2 years 4 months 9 days
Aggregate Intrinsic Value, Beginning balance	$ 0	$ 0
Aggregate Intrinsic Value, Ending balance	$ 0	$ 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract]
Options, Vested and exercisable, Outstanding (in shares)	11,750
Options, Vested and exercisable, Weighted Average Exercise Price (in US$ per share)	$ 29.76
Options, Vested and exercisable, Aggregate Intrinsic Value	$ 0
Share-based Compensation Arrangements by Share-based Payment Award, Options, Expirations in Period, Weighted Average Exercise Price	$ 21.33

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

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Weighted average price of options that were either forfeited or expired.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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Number of options outstanding, including both vested and non-vested options.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which option holders acquired shares when converting their stock options into shares.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of share options (or share units) exercised during the current period.

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