EXHIBIT A
JOINT FILING AGREEMENT
The undersigned acknowledge and agree that the foregoing statement on
Schedule 13G is filed on behalf of each of the undersigned and that all
subsequent amendments to this statement on Schedule 13G shall be filed on behalf
of each of the undersigned without the necessity of filing additional joint
acquisition statements. The undersigned acknowledge that each shall be
responsible for the timely filing of such amendments, and for the completeness
and accuracy of the information concerning him or it contained therein, but
shall not be responsible for the completeness and accuracy of the information
concerning the other, except to the extent that he or it knows or has reason to
believe that such information is accurate.
Dated: April 30, 1999.
The TCW Group, Inc.
By: /s/ Xxxxx X. Xxxxxx
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Xxxxx X. Xxxxxx
Authorized Signatory
Xxxxxx Xxx
By: /s/ Xxxxx X. Xxxxxx
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Xxxxx X. Xxxxxx
Under Power of Attorney dated March
31, 1999, on File with Schedule 13G
for Hibbett Sporting Goods, Inc.
dated April 8, 1999.
Oakmont Corporation
By: /s/ Xxxxxx X. Xxxxxx
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Xxxxxx X. Xxxxxx
Senior Vice President,
Finance
