Cover Page - shares	6 Months Ended
	Dec. 31, 2024	Feb. 03, 2025
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2024
Document Transition Report	false
Entity File Number	001-34249
Entity Registrant Name	FARMER BROTHERS CO
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-0725980
Entity Address, Address Line One	14501 N Fwy
Entity Address, City or Town	Fort Worth
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	76177
City Area Code	682
Local Phone Number	549-6600
Title of 12(b) Security	Common Stock, par value $1.00 per share
Trading Symbol	FARM
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		21,353,940
Amendment Flag	false
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2025
Entity Central Index Key	0000034563
Current Fiscal Year End Date	--06-30