Employee Benefit Plans - Description of Investment Policy (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2020
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 106,459	$ 134,161	$ 138,412
Accumulated benefit obligation	106,459	134,161
Fair value of plan assets at measurement date	$ 78,098	$ 95,111	79,819
Plan assets by category	100.00%	100.00%
Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 46,876	$ 61,047
Plan assets by category	60.00%	64.20%
Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 24,984	$ 28,705
Plan assets by category	32.00%	30.20%
Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 6,238	$ 5,359
Plan assets by category	8.00%	5.60%
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 102,508	$ 129,091	133,326
Accumulated benefit obligation	102,508	129,091
Fair value of plan assets at measurement date	$ 74,250	$ 90,508	75,904
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	$ 46,121	$ 58,089
Plan assets by category	62.10%	64.20%
Farmer Brothers Plan | Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 21,891	$ 27,311
Plan assets by category	29.50%	30.20%
Farmer Brothers Plan | Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 6,238	$ 5,108
Plan assets by category	8.40%	5.60%
Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 3,951	$ 5,070	5,086
Accumulated benefit obligation	3,951	5,070
Fair value of plan assets at measurement date	$ 3,848	$ 4,603	$ 3,915
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	$ 755	$ 2,958
Plan assets by category	19.60%	64.20%
Hourly Employees’ Plan | Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 3,093	$ 1,394
Plan assets by category	80.40%	30.30%
Hourly Employees’ Plan | Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 0	$ 251
Plan assets by category	0.00%	5.60%