Farmer Bros. Co. and Summary of Significant Accounting Policies - Coffee Brewing Equipment and Service (Details) (USD $)	3 Months Ended		6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Cost of goods sold	$ 85,352,000	$ 87,229,000	$ 159,884,000	$ 168,741,000
Coffee brewing equipment
Property, Plant and Equipment [Line Items]
Capitalized coffee brewing equipment during the period			4,900,000	5,200,000
Depreciation	3,300,000	2,900,000	6,600,000	5,800,000
Coffee Brewing Equipment and Service [Member]
Property, Plant and Equipment [Line Items]
Cost of goods sold	$ 6,300,000	$ 6,400,000	$ 12,100,000	$ 12,400,000