POWER OF ATTORNEY
I hereby constitute and appoint Daniel A. Baker and Daniel Nelson, and each of
them, acting alone without any of the others, my true and lawful attorneys-in-fact
and agents, with full power of substitution and resubstitution, for me and in
my name, place and stead, in any and all capacities, to prepare, sign and file
any and all Forms 3, 4, 5 and 144 and any successor Forms (and any amendments
or corrections to all such forms, and any related documents or items) which they
deem needed or desirable with the Securities and Exchange Commission and any and
all stock exchanges, granting unto said attorneys-in-fact and agents full power
and authority to do and perform each and every act and thing necessary or appropriate
in connection with this power and authority, hereby ratifying and confirming all
that said attorneys-in-fact and agents, or their substitute or substitutes, may
lawfully do or cause to be done by virtue thereof.