Share-Based Compensation - Restricted Stock Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares withheld to cover taxes (in shares)	(4,297)
Restricted Stock | Vested
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares Awarded, Beginning balance	96,212	139,360	175,947
Shares Awarded, Granted		9,200	51,177
Shares Awarded, Exercised/Released	(53,402)	(38,212)	(64,668)
Shares Awarded, Cancelled/Forfeited	(8,984)	(14,136)	(23,096)
Shares Awarded, Ending balance	47,082	96,212	139,360	175,947
Weighted Average Grant Date Fair Value, Beginning balance	$ 10.27	$ 9.87	$ 10.16
Weighted Average Grant Date Fair Value, Granted		20.48	11.67
Weighted Average Grant Date Fair Value, Exercised/Released	8.43	11.59	11.27
Weighted Average Grant Date Fair Value, Cancelled/Forfeited	8.36	9.38	12.21
Weighted Average Grant Date Fair Value, Ending balance	$ 16.48	$ 10.27	$ 9.87	$ 10.16
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	1 year 2 months 12 days	1 year 6 months	1 year 10 months 24 days	1 year 10 months 24 days
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsOutstandingWeightedAverageRemainingContractualTerms	1 year 2 months 12 days	1 year 6 months	1 year 10 months 24 days	1 year 10 months 24 days
Aggregate Intrinsic Value, Beginning Balance	$ 2,079	$ 1,959	$ 1,401
Aggregate Intrinsic Value, Exercised/Released	1,377	820	832
Aggregate Intrinsic Value, Granted	313	188	597
Aggregate Intrinsic Value, Cancelled/Forfeited	0	0	0
Aggregate Intrinsic Value, Ending Balance	$ 1,106	$ 2,079	$ 1,959	$ 1,401
Vested and Expected to Vest, Outstanding, Number		44,936
Vested and Expected to Vest, Weighted Average Exercise Price		$ 16.32
Vested and Expected to Vest, Weighted Average Remaining Life		1 year 2 months 12 days
Vested and Expected to Vest, Aggregate Intrinsic Value		$ 1,056
Farmer Bros. Co. Amended and Restated 2007 Long-Term Incentive Plan | Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Shares Awarded, Granted	13,256	9,200
Weighted Average Grant Date Fair Value, Granted	$ 23.64	$ 20.48