Employee Benefit Plans - Estimated Future Benefit Payments (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	$ 5,970
June 30, 2013	1,000
June 30, 2014	6,110
June 30, 2015	6,260
June 30, 2016	6,520
June 30, 2017	6,740
2018-2021	37,640
Brewmatic Plan
Defined Benefit Plan Disclosure
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	290
June 30, 2013	100
June 30, 2014	290
June 30, 2015	280
June 30, 2016	280
June 30, 2017	290
2018-2021	1,380
Hourly Employees' Plan
Defined Benefit Plan Disclosure
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	34
June 30, 2013	200
June 30, 2014	47
June 30, 2015	64
June 30, 2016	81
June 30, 2017	100
2018-2021	810
Postretirement Benefits Other Than Pension
Defined Benefit Plan Disclosure
Defined Benefit Plan, Expected Future Benefit Payments, Next Twelve Months	640
June 30, 2013	640
June 30, 2014	762
June 30, 2015	836
June 30, 2016	913
June 30, 2017	1,034
2018-2021	$ 6,522