Document and Entity Information (USD $)	9 Months Ended
	Mar. 31, 2012	May 07, 2012	Jun. 30, 2011
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Trading Symbol	FARM
Entity Registrant Name	FARMER BROTHERS CO
Entity Central Index Key	0000034563
Current Fiscal Year End Date	--06-30
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		16,281,035
Common stock, par value	$ 1.00	$ 1.00	$ 1.00