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, 2022	Jun. 30, 2021	Jun. 30, 2020
Components of net periodic benefit cost
Interest cost	$ 3,391	$ 3,437	$ 4,236
Expected return on plan assets	(4,948)	(4,151)	(4,406)
Amortization of net loss	1,356	2,010	1,479
Pension settlement charge	(201)	1,296	1,309
Net periodic benefit cost
Net (gain) loss (1)	(7,821)	(15,767)	14,779
Amortization of net loss	(1,356)	(2,010)	(1,479)
Total recognized in other comprehensive income	(9,177)	(17,777)	13,300
Total recognized in net periodic benefit cost and OCI	$ (9,378)	$ (16,481)	$ 14,609
Weighted average assumptions used to determine benefit obligations
Discount rate	2.60%	2.55%	3.45%
Expected long-term return on plan assets	6.38%	6.25%	6.75%
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	$ 3,262	$ 3,309	$ 4,084
Expected return on plan assets	(4,734)	(3,959)	(4,174)
Amortization of net loss	1,356	1,987	1,475
Pension settlement charge	(116)	1,337	1,385
Net periodic benefit cost
Net (gain) loss (1)	(7,542)	(15,127)	14,225
Amortization of net loss	(1,356)	(1,987)	(1,475)
Total recognized in other comprehensive income	(8,898)	(17,114)	12,750
Total recognized in net periodic benefit cost and OCI	$ (9,014)	$ (15,777)	$ 14,135
Weighted average assumptions used to determine benefit obligations
Discount rate	2.60%	2.55%	3.45%
Expected long-term return on plan assets	6.25%	6.25%	6.75%
Hourly Employees’ Plan
Components of net periodic benefit cost
Interest cost	$ 129	$ 128	$ 152
Expected return on plan assets	(214)	(192)	(232)
Amortization of net loss	0	23	4
Pension settlement charge	(85)	(41)	(76)
Net periodic benefit cost
Net (gain) loss (1)	(279)	(640)	554
Amortization of net loss	0	(23)	(4)
Total recognized in other comprehensive income	(279)	(663)	550
Total recognized in net periodic benefit cost and OCI	$ (364)	$ (704)	$ 474
Weighted average assumptions used to determine benefit obligations
Discount rate	2.60%	2.55%	3.45%
Expected long-term return on plan assets	6.50%	6.25%	6.75%