POWER OF ATTORNEY
(For Executing Forms 3, 4, and 5)

	KNOW ALL MEN BY THESE PRESENTS that the undersigned hereby constitutes and
appoints each of Cara M. Hair, Debra R. Stockton and Doris Nelson signing
singly, his/her true and lawful attorney-in-fact to:

	(1)	execute for and on behalf of the undersigned Forms 3, 4, and 5 in
accordance with Section 16(a) of the Securities Exchange Act of 1934 and the
rules thereunder;

	(2)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or desirable to complete the execution of any such Form 3, 4,
or 5 and the timely filing of such Form with the United States Securities and
Exchange Commission and any other authority; and

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

	The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform each and every act and thing whatsoever requisite,
necessary, and 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 or revocation,
hereby ratifying and confirming all that such attorney-in-fact or his 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 the foregoing attorneys-in-fact, in serving in such capacity at the request
of the undersigned, are not assuming any of the undersigned's responsibilities
to comply with Section 16 of the Securities Exchange Act of 1934.

	The undersigned agrees that each such attorney-in-fact herein may rely entirely
on information furnished orally or in writing by the undersigned to such
attorney-in-fact. The undersigned also agrees to indemnify and hold harmless the
Company and each such attorney-in-fact against any losses, claims, damages or
liabilities (or actions in these respects) that arise out of or are based upon
any untrue statements or omission of necessary facts in the information provided
by the undersigned to such attorney-in fact for purposes of executing,
acknowledging, delivering or filing Forms 3, 4 or 5 (including amendments
thereto) or Form ID and agrees to reimburse the Company and such
attorney-in-fact for any legal or other expenses reasonably incurred in
connection with investigating or defending against any such loss, claim, damage,
liability or action.

	IN WITNESS WHEREOF, the undersigned has caused this Power of attorney to be
executed as of this 20th day of June, 2018.

		/s/ Delaney Bellinger



CERTIFICATION

	The undersigned hereby certifies that he/she has read and understands, and
agrees to comply with, the Company's insider trading policy, a copy of which was
distributed with this Certification form.

Dated: June 20, 2018

		/s/ Delaney Bellinger