POWER OF ATTORNEY

      The undersigned hereby constitutes and appoints Ryan C. Wilkins of
Stradling Yocca Carlson & Rauth, P.C. ("Stradling"), the undersigned's true and
lawful attorney-in-fact ("Attorney-in-Fact") to:

      (1)   complete and execute, for and on behalf of the undersigned, in the
            undersigned's capacity as the beneficial owner of shares of common
            stock ("Common Stock") of Farmer Brothers Co., a Delaware
            corporation (the "Company"), or securities exercisable, convertible
            or exchangeable for shares of Common Stock ), Forms 3, 4 and 5, and
            Schedules 13D and 13G, and such other forms and documents (including
            any amendments to any of the foregoing) as Attorney-In-Fact shall,
            in his sole discretion, determine to be required or advisable
            pursuant to Section 16(a) and Section 13(d) of the Securities
            Exchange Act of 1934, as amended (the "Exchange Act") and the rules
            and regulations of the Securities and Exchange Commission (the
            "SEC") promulgated thereunder, or any successor laws and
            regulations, as a consequence of, or in respect of, the
            undersigned's ownership, acquisition or disposition of securities of
            the Company;

      (2)   do and perform any and all acts for and on behalf of the undersigned
            which may be necessary or desirable to complete and execute any such
            forms and schedules (including any amendments thereto), and timely
            file such forms and schedules (including any amendments thereto),
            with the SEC, any national securities exchange, and any other
            relevant governmental or regulatory agency or authority;

      (3)   take any other action of any type whatsoever in connection with the
            foregoing which, in the opinion of Attorney-in-Fact, may be of
            benefit to, in the best interest of, or legally required by, the
            undersigned, it being understood that the forms and documents
            executed by Attorney-in-Fact on behalf of the undersigned pursuant
            to this Power of Attorney (including any amendments thereto) shall
            be in such form and shall contain such information as Attorney-in-
            Fact may approve in his sole discretion.

      The undersigned hereby grants to Attorney-in-Fact full power and authority
to do and perform each and every act and thing whatsoever requisite, necessary
or proper to be done in the exercise of any of the rights and powers herein
granted, as fully to all intents and purposes as the undersigned might or could
do if personally present, with full power of substitution and revocation, hereby
ratifying and confirming all that Attorney-in-Fact, or Attorney-in-Fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and powers herein granted.  The
undersigned acknowledges that Attorney-in-Fact, in serving in such capacity at
the request of the undersigned, is not assuming any of the undersigned's
responsibilities to comply with Section 16(a) and Section 13(d) of the Exchange
Act, nor is Attorney in Fact assuming any other legal obligations to which the
undersigned is currently (or may become) subject.

      The undersigned agrees that Attorney-in-Fact may rely entirely on
information furnished orally or in writing by the undersigned to Attorney- in-
Fact.  The undersigned also agrees to indemnify and hold harmless Attorney-in-
Fact against any losses, claims, damages or liabilities (or actions or
investigations in these respects) that arise out of or are based on any untrue
statement or omission of necessary facts in the information provided by the
undersigned to Attorney-in-Fact for purposes of preparing, executing, delivering
and filing Forms 3, 4 and 5, and Schedules 13D and 13G (including any amendments
thereto), and agrees to reimburse Stradling for any legal or other expenses
reasonably incurred in connection with investigating or defending against any
such loss, claim, damage, liability or action.

      This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 and 5, or Schedules 13D and
13G, with respect to the undersigned's beneficial ownership of or transactions
in the Common Stock, unless earlier revoked by the undersigned in a signed
writing delivered to Attorney-in-Fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 14th day of May, 2017.

                                 /s/ Carol Lynn Farmer Waite
                                ----------------------------------------------
                                Carol Lynn Farmer Waite