POWER OF ATTORNEY
	KNOW ALL PERSONS BY THESE PRESENTS, that the
undersigned constitutes and appoints Samuel D. Bush, Marcia Lobaito and
Paul R. Rentenbach, and each of them, the undersigned's true and lawful
attorneys-in-fact and agents, with full power of substitution, and
resubstitution for the undersigned and in the undersigned's name, place and
stead, in any and all capacities, to:
	(1)	execute for and on behalf of
the undersigned Forms 3, 4 and 5 and all other forms that may be required
to be filed by the undersigned from time to time under Section 16(a) of the
Securities Exchange Act of 1934 and the rules promulgated thereunder;

	(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 such forms and
timely file such forms with the United States Securities and Exchange
Commission and any stock exchange or similar 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 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 such
attorney-in-fact's 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 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 in person, with
full power of substitution or revocation, hereby ratifying and confirming
all that such attorney-in-fact and agents, or any of them, or their or his
or her substitute or substitutes, may lawfully do or cause to be done by
virtue hereof.  The undersigned acknowledges that the foregoing
attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.
	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 any other forms under Section 16(a) of the Securities Exchange Act
of 1934, unless earlier revoked by the undersigned in a signed writing
delivered to the foregoing attorneys-in-fact.
	IN WITNESS WHEREOF, the
undersigned has caused this Power of Attorney to be executed as of this
13th day of May, 2003.
/s/ Gary Stevens
Gary Stevens