Employee Benefit Plans - Fair Value of Plan Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Farmer Brothers Plan
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	$ 88,097	$ 82,110	$ 80,448
Farmer Brothers Plan | Fair Value
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	88,097	82,110
Farmer Brothers Plan | Level 1
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	0	0
Farmer Brothers Plan | Level 2
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	88,097	78,006
Farmer Brothers Plan | Level 3
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	0	4,104	4,711
Brewmatic Plan
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	3,063	2,718	2,871
Brewmatic Plan | Fair Value
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	3,063	2,718
Brewmatic Plan | Level 1
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	0	0
Brewmatic Plan | Level 2
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	3,063	2,582
Brewmatic Plan | Level 3
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	0	136	167
Hourly Employees' Plan
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	1,248	1,013	421
Hourly Employees' Plan | Fair Value
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	1,248	1,013
Hourly Employees' Plan | Level 1
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	0	0
Hourly Employees' Plan | Level 2
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	1,248	947
Hourly Employees' Plan | Level 3
Defined Benefit Plan Disclosure
Fair Value of Plan Assets	$ 0	$ 66	$ 25