Employee Benefit Plans - Fair Value of Plan Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 79,624	$ 78,098	$ 95,111
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	75,934	74,250	90,508
Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	3,690	3,848	$ 4,603
Level 1 | Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Level 1 | Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Level 2 | Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Level 2 | Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Level 3 | Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Level 3 | Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	0	0
Fair Value Measured at Net Asset Value Per Share | Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	75,934	74,250
Fair Value Measured at Net Asset Value Per Share | Hourly Employees’ Plan
Defined Benefit Plan Disclosure
Fair value of plan assets at measurement date	$ 3,690	$ 3,848