Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
NQOs
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options exercised (shares)	(95,723)	(112,964)	(117,482)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	$ 747	$ 895	$ 336
Weighted Average Exercise Price, Exercised	$ 16.17	$ 13.10	$ 10.24
Weighted Average Grant Date Fair Value, Exercised	$ 5.86	$ 5.81	$ 5.23
Weighted Average Remaining Life, Granted	6 years 9 months 18 days	6 years 4 months 24 days	6 years 6 months
Aggregate Intrinsic Value, Granted	$ 0	$ 0	$ 374
NQOs | Nonvested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Beginning balance	167,798	315,661	343,239
Number of options granted (shares)		1,927	192,892
Number of options cancelled/forfeited (shares)	(12,134)	(15,833)	(31,561)
Number of options - Ending balance	80,195	167,798	315,661	343,239
Weighted Average Exercise Price, Beginning balance	$ 10.65	$ 10.80	$ 10.76
Weighted Average Exercise Price, Granted	23.91	18.68	12.12
Weighted Average Exercise Price, Cancelled/Forfeited	10.31	11.48	13.82
Weighted Average Exercise Price, Ending balance	15.94	10.65	10.80	$ 10.76
Weighted Average Grant Date Fair Value, Beginning balance	5.06	5.12	4.20
Weighted Average Grant Date Fair Value, Granted	10.38	9.17	5.69
Weighted Average Grant Date Fair Value, Cancelled/Forfeited	4.91	5.49	5.92
Weighted Average Grant Date Fair Value, Ending balance	$ 7.21	$ 5.06	$ 5.12	$ 4.20
EmployeeServiceShareBasedCompensationNonvestedAwardsWeightedAverageRemainingAmortizationPeriod	5 years 2 months 12 days	5 years 3 months 18 days	6 years 1 month 6 days	6 years 3 months 18 days
NQOs | Vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Beginning balance	412,454	557,427	667,235
Number of options granted (shares)	25,703	1,927	192,892
Number of options vested (shares)	(101,172)	(133,957)	(188,909)
Number of options cancelled/forfeited (shares)	(13,134)	(33,936)	(185,218)
Number of options - Ending balance	329,300	412,454	557,427	667,235
Weighted Average Exercise Price, Beginning balance	$ 12.44	$ 12.81	$ 12.84
Weighted Average Exercise Price, Granted	23.91	18.68	12.12
Weighted Average Exercise Price, Vested	9.87	11.02	11.56
Weighted Average Exercise Price, Cancelled/Forfeited	11.26	16.63	13.83
Weighted Average Exercise Price, Ending balance	12.30	12.44	12.81	$ 12.84
Weighted Average Grant Date Fair Value, Beginning balance	5.30	5.44	4.78
Weighted Average Grant Date Fair Value, Granted	10.38	9.17	5.69
Weighted Average Grant Date Fair Value, Vested	4.72	5.21	5.33
Weighted Average Grant Date Fair Value, Cancelled/Forfeited	5.00	6.13	5.92
Weighted Average Grant Date Fair Value, Ending balance	$ 5.54	$ 5.30	$ 5.44	$ 4.78
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	3 years 10 months 24 days	4 years 4 months 24 days	5 years 1 month 6 days	4 years 9 months 18 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	3 years 10 months 24 days	4 years 4 months 24 days	5 years 1 month 6 days	4 years 9 months 18 days
Aggregate Intrinsic Value, Beginning balance	$ 3,700	$ 3,782	$ 1,620	$ 143
Aggregate Intrinsic Value, Ending balance	$ 3,700	$ 3,782	$ 1,620	$ 143
Options, Vested and exercisable, Outstanding	249,105
Options, Vested and exercisable, Weighted Average Exercise Price	$ 11.13
Options, Vested and exercisable, Weighted Average Grant Date Fair Value	$ 5.00
Options, Vested and exercisable, Weighted Average Remaining Contractual Term	3 years 6 months
Options, Vested and exercisable, Aggregate Intrinsic Value	$ 3,082
Options, Vested and expected to vest, Outstanding	326,723
Options, Vested and expected to vest, Weighted Average Exercise Price	$ 12.22
Options, Vested and expected to vest, Weighted Average Grant Date Fair Value	$ 5.51
Options, Vested and expected to vest, Exercisable, Weighted Average Remaining Life	3 years 10 months 24 days
Options, Vested and expected to vest, Aggregate Intrinsic Value	$ 3,684
NQOs | Farmer Bros. Co. Amended and Restated 2007 Long-term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options granted (shares)	25,703
Weighted Average Exercise Price, Granted		$ 23.91
Weighted Average Grant Date Fair Value, Granted		$ 10.38	$ 9.17	$ 5.69
PNQs | Vested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options vested (shares)	(34,959)
Weighted Average Exercise Price, Vested	$ 21.27
Weighted Average Grant Date Fair Value, Vested	$ 10.49
PNQs | Farmer Bros. Co. Amended and Restated 2007 Long-term Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Beginning balance	112,442	0
Number of options granted (shares)	121,024	112,442
Number of options cancelled/forfeited (shares)	(9,399)	0
Number of options - Ending balance	224,067	112,442	0
Weighted Average Exercise Price, Beginning balance	$ 21.27	$ 0.00
Weighted Average Exercise Price, Granted	23.44	21.27
Weighted Average Exercise Price, Cancelled/Forfeited	21.33	0.00
Weighted Average Exercise Price, Ending balance	22.44	21.27	$ 0.00
Weighted Average Grant Date Fair Value, Beginning balance	10.49	0.00
Weighted Average Grant Date Fair Value, Granted	10.16	10.49
Weighted Average Grant Date Fair Value, Cancelled/Forfeited	10.52	0.00
Weighted Average Grant Date Fair Value, Ending balance	$ 10.31	$ 10.49	$ 0.00
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	6 years	6 years 6 months
Weighted Average Remaining Life, Granted	6 years 7 months 6 days	6 years 6 months
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	6 years	6 years 6 months
Aggregate Intrinsic Value, Beginning balance	$ 237	$ 38	$ 0
Aggregate Intrinsic Value, Cancelled/Forfeited	0	0
Aggregate Intrinsic Value, Ending balance	$ 237	$ 38	$ 0
Options, Vested and exercisable, Outstanding		34,959
Options, Vested and exercisable, Weighted Average Exercise Price		$ 21.27
Options, Vested and exercisable, Weighted Average Grant Date Fair Value		$ 10.49
Options, Vested and exercisable, Weighted Average Remaining Contractual Term		5 years
Options, Vested and exercisable, Aggregate Intrinsic Value		$ 78
Options, Vested and expected to vest, Outstanding		204,669
Options, Vested and expected to vest, Weighted Average Exercise Price		$ 22.40
Options, Vested and expected to vest, Weighted Average Grant Date Fair Value		$ 10.32
Options, Vested and expected to vest, Exercisable, Weighted Average Remaining Life		6 years
Options, Vested and expected to vest, Aggregate Intrinsic Value		$ 226
PNQs | Farmer Bros. Co. Amended and Restated 2007 Long-term Incentive Plan | Nonvested
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of options - Ending balance	189,108
Weighted Average Exercise Price, Ending balance	$ 22.66
Weighted Average Grant Date Fair Value, Ending balance	$ 10.28
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	6 years 2 months 12 days
SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	6 years 2 months 12 days