Employee Benefit Plans - Components of Net Periodic Benefit Cost and Amounts Recognized in Other Comprehensive Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2021
Components of net periodic benefit cost
Interest cost	$ 4,624	$ 3,391	$ 3,437
Expected return on plan assets	(4,035)	(4,948)	(4,151)
Amortization of net loss	1,125	1,356	2,010
Pension settlement charge	1,714	(201)	1,296
Net periodic benefit cost
Net (gain) loss (1)	(7,285)	(7,821)	(15,767)
Amortization of net loss	(1,125)	(1,356)	(2,010)
Total recognized in other comprehensive income	(8,410)	(9,177)	(17,777)
Total recognized in net periodic benefit cost and OCI	$ (6,696)	$ (9,378)	$ (16,481)
Weighted average assumptions used to determine benefit obligations
Discount rate	4.50%	2.60%	2.55%
Expected long-term return on plan assets	5.63%	6.38%	6.25%
Defined Benefit Plan, Net Periodic Benefit (Cost) Credit, Settlement Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Postretirement benefits curtailment and pension settlement charge
Farmer Brothers Plan
Components of net periodic benefit cost
Interest cost	$ 4,451	$ 3,262	$ 3,309
Expected return on plan assets	(3,906)	(4,734)	(3,959)
Amortization of net loss	1,125	1,356	1,987
Pension settlement charge	1,670	(116)	1,337
Net periodic benefit cost
Net (gain) loss (1)	(7,249)	(7,542)	(15,127)
Amortization of net loss	(1,125)	(1,356)	(1,987)
Total recognized in other comprehensive income	(8,374)	(8,898)	(17,114)
Total recognized in net periodic benefit cost and OCI	$ (6,704)	$ (9,014)	$ (15,777)
Weighted average assumptions used to determine benefit obligations
Discount rate	4.50%	2.60%	2.55%
Expected long-term return on plan assets	6.50%	6.25%	6.25%
Hourly Employees’ Plan
Components of net periodic benefit cost
Interest cost	$ 173	$ 129	$ 128
Expected return on plan assets	(129)	(214)	(192)
Amortization of net loss	0	0	23
Pension settlement charge	44	(85)	(41)
Net periodic benefit cost
Net (gain) loss (1)	(36)	(279)	(640)
Amortization of net loss	0	0	(23)
Total recognized in other comprehensive income	(36)	(279)	(663)
Total recognized in net periodic benefit cost and OCI	$ 8	$ (364)	$ (704)
Weighted average assumptions used to determine benefit obligations
Discount rate	4.50%	2.60%	2.55%
Expected long-term return on plan assets	4.75%	6.50%	6.25%