Farmer Bros. Co. and Summary of Significant Accounting Policies - Coffee Brewing Equipment and Service (Details) (USD $)	3 Months Ended		9 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Property, Plant and Equipment [Line Items]
Cost of goods sold	$ 77,668,000	$ 78,380,000	$ 237,552,000	$ 247,121,000
Coffee brewing equipment
Property, Plant and Equipment [Line Items]
Capitalized coffee brewing equipment during the period			7,100,000	9,900,000
Depreciation	3,200,000	2,900,000	9,800,000	8,700,000
Coffee Brewing Equipment and Service [Member]
Property, Plant and Equipment [Line Items]
Cost of goods sold	$ 7,000,000	$ 6,700,000	$ 19,100,000