Employee Benefit Plans - Description of Investment Policy (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 99,207	$ 106,459	$ 134,161
Accumulated benefit obligation	99,207	106,459
Fair value of plan assets at measurement date	$ 79,624	$ 78,098	95,111
Plan assets by category	100.00%	100.00%
Equity Securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 50,266	$ 46,876
Plan assets by category	63.10%	60.00%
Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 23,705	$ 24,984
Plan assets by category	29.80%	32.00%
Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 5,653	$ 6,238
Plan assets by category	7.10%	8.00%
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 95,406	$ 102,508	129,091
Accumulated benefit obligation	95,406	102,508
Fair value of plan assets at measurement date	$ 75,934	$ 74,250	90,508
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	$ 49,516	$ 46,121
Plan assets by category	65.20%	62.10%
Farmer Brothers Plan | Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 20,765	$ 21,891
Plan assets by category	27.30%	29.50%
Farmer Brothers Plan | Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 5,653	$ 6,238
Plan assets by category	7.50%	8.40%
Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Projected postretirement benefit obligation at end of year	$ 3,801	$ 3,951	5,070
Accumulated benefit obligation	3,801	3,951
Fair value of plan assets at measurement date	$ 3,690	$ 3,848	$ 4,603
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	$ 750	$ 755
Plan assets by category	20.30%	19.60%
Hourly Employees’ Plan | Debt securities
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 2,940	$ 3,093
Plan assets by category	79.70%	80.40%
Hourly Employees’ Plan | Real Asset
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 0	$ 0
Plan assets by category	0.00%	0.00%