Share-Based Compensation - Stock Option Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended | |
Sep. 30, 2016 | Jun. 30, 2016 | Sep. 30, 2016 |
Non-qualified Stock Options with Time-based Vesting (NQO) [Member] | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] | | | |
Weighted Average Remaining Life, Beginning balance | | 3 years 8 months 12 days | |
Weighted Average Remaining Life, Ending balance | | 3 years 8 months 12 days | |
Aggregate Intrinsic Value, Beginning balance | | $ 3,995 | |
Aggregate Intrinsic Value, Ending balance | | $ 3,995 | |
Non-qualified Stock Options with Time-based Vesting (NQO) [Member] | Vested | | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] | | | |
Number of options - Beginning balance (in shares) | 219,629 | | |
Number of options - Ending balance (in shares) | | 219,629 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] | | | |
Weighted Average Exercise Price, Beginning balance (in US$ per share) | $ 13.87 | | |
Weighted Average Exercise Price, Ending balance (in US$ per share) | | $ 13.87 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] | | | |
Weighted Average Grant Date Fair Value, Beginning balance (in US$ per share) | 6.28 | | |
Weighted Average Grant Date Fair Value, Ending balance (in US$ per share) | | $ 6.28 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] | | | |
Options, Vested and exercisable, Outstanding (in shares) | | | 166,147 |
Options, Vested and exercisable, Weighted Average Exercise Price (in US$ per share) | | | $ 11.33 |
Options, Vested and exercisable, Weighted Average Grant Date Fair Value (in US$ per share) | $ 5.25 | | |
Options, Vested and exercisable, Weighted Average Remaining Contractual Term | 3 years | | |
Options, Vested and exercisable, Aggregate Intrinsic Value | | | $ 4,025 |
Options, Vested and expected to vest, Outstanding (in shares) | | | 202,333 |
Options, Vested and expected to vest, Weighted Average Exercise Price (in US$ per share) | | | $ 14.13 |
Options, Vested and expected to vest, Weighted Average Grant Date Fair Value (in US$ per share) | $ 6.39 | | |
Options, Vested and expected to vest, Exercisable, Weighted Average Remaining Life | 3 years 6 months | | |
Options, Vested and expected to vest, Aggregate Intrinsic Value | | | $ 4,333 |
Non-qualified Stock Options with Time-based Vesting (NQO) [Member] | 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) | 0 | | |
Number of options exercised (shares) | (12,000) | | |
Number of options cancelled/forfeited (shares) | (3,278) | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] | | | |
Weighted average purchase price (in US$ per share) | $ 0 | | |
Weighted Average Exercise Price, Exercised (in US$ per share) | 6.96 | | |
Weighted Average Exercise Price, Cancelled/Forfeited (in US$ per share) | 14.60 | | |
Weighted Average Exercise Price, Ending balance (in US$ per share) | 14.26 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] | | | |
Weighted average fair value (in US$ per share) | 0 | | |
Weighted Average Grant Date Fair Value, Exercised (in US$ per share) | 3.44 | | |
Weighted Average Grant Date Fair Value, Cancelled/Forfeited (in US$ per share) | 6.02 | | |
Weighted Average Grant Date Fair Value, Ending balance (in US$ per share) | $ 6.45 | | |
Weighted Average Remaining Life, Beginning balance | 3 years 6 months | | |
Weighted Average Remaining Life, Ending balance | 3 years 6 months | | |
Aggregate Intrinsic Value, Beginning balance | $ 4,350 | | $ 4,350 |
Aggregate intrinsic value, exercised | 318 | | |
Aggregate Intrinsic Value, Cancelled/Forfeited | 0 | | |
Aggregate Intrinsic Value, Ending balance | $ 4,350 | | |
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Number of Outstanding Options | | | 204,351 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value | $ 0 | | |
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 (in shares) | 288,599 | | |
Number of options granted (shares) | 0 | | |
Number of options exercised (shares) | 0 | | |
Number of options cancelled/forfeited (shares) | 0 | | |
Number of options - Ending balance (in shares) | 288,599 | 288,599 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract] | | | |
Weighted Average Exercise Price, Beginning balance (in US$ per share) | $ 25.83 | | |
Weighted average purchase price (in US$ per share) | 0 | | |
Weighted Average Exercise Price, Exercised (in US$ per share) | 0 | | |
Weighted Average Exercise Price, Cancelled/Forfeited (in US$ per share) | 0 | | |
Weighted Average Exercise Price, Ending balance (in US$ per share) | 25.83 | $ 25.83 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract] | | | |
Weighted Average Grant Date Fair Value, Beginning balance (in US$ per share) | 10.82 | | |
Weighted average fair value (in US$ per share) | 0 | | |
Weighted Average Grant Date Fair Value, Exercised (in US$ per share) | 0 | | |
Weighted Average Grant Date Fair Value, Cancelled/Forfeited (in US$ per share) | 0 | | |
Weighted Average Grant Date Fair Value, Ending balance (in US$ per share) | $ 10.82 | $ 10.82 | |
Weighted Average Remaining Life, Beginning balance | 5 years 6 months | 5 years 8 months 12 days | |
Weighted Average Remaining Life, Ending balance | 5 years 6 months | 5 years 8 months 12 days | |
Aggregate Intrinsic Value, Beginning balance | $ 2,805 | $ 1,798 | $ 2,805 |
Aggregate intrinsic value, exercised | 0 | | |
Aggregate Intrinsic Value, Cancelled/Forfeited | 0 | | |
Aggregate Intrinsic Value, Ending balance | $ 2,805 | $ 1,798 | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Grant Date Intrinsic Value | $ 0 | | |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest [Abstract] | | | |
Options, Vested and exercisable, Outstanding (in shares) | | | 48,132 |
Options, Vested and exercisable, Weighted Average Exercise Price (in US$ per share) | | | $ 22.52 |
Options, Vested and exercisable, Weighted Average Grant Date Fair Value (in US$ per share) | $ 10.31 | | |
Options, Vested and exercisable, Weighted Average Remaining Contractual Term | 4 years 10 months 24 days | | |
Options, Vested and exercisable, Aggregate Intrinsic Value | | | $ 627 |
Options, Vested and expected to vest, Outstanding (in shares) | | | 277,923 |
Options, Vested and expected to vest, Weighted Average Exercise Price (in US$ per share) | | | $ 25.76 |
Options, Vested and expected to vest, Weighted Average Grant Date Fair Value (in US$ per share) | $ 10.81 | | |
Options, Vested and expected to vest, Exercisable, Weighted Average Remaining Life | 5 years 6 months | | |
Options, Vested and expected to vest, Aggregate Intrinsic Value | | | $ 2,722 |