EXHIBIT A
JOINT FILING AGREEMENT
The undersigned, being duly authorized thereunto, hereby execute this agreement
as an exhibit to this Schedule 13D to evidence the agreement of the below-named
parties, in accordance with the rules promulgated pursuant to the Securities
Exchange Act of 1934, as amended, to file this Schedule 13D jointly on behalf of
each such party.
The execution and filing of this agreement shall not be construed as an
admission that the below-named parties are a group, or have agreed to act as a
group.
Dated: January 19, 2007
GENSTAR IV GP LLC
By: /s/ Xxxx-Xxxxxx X. Xxxxx
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Name: Xxxx-Xxxxxx X. Xxxxx
Title: Managing Director
GENSTAR CAPITAL IV, L.P.
By: Genstar IV GP LLC
Its: General Partner
By: /s/ Xxxx-Xxxxxx X. Xxxxx
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Name: Xxxx-Xxxxxx X. Xxxxx
Title: Managing Director
GENSTAR CAPITAL PARTNERS IV, L.P.
By: Genstar Capital IV, L.P.
Its: General Partner
By: Genstar IV GP LLC
Its: General Partner
By: /s/ Xxxx-Xxxxxx X. Xxxxx
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Name: Xxxx-Xxxxxx X. Xxxxx
Title: Managing Director
IAC HOLDING CO.
By: /s/ Xxxxxx X. Gold
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Name: Xxxxxx X. Gold
Title: President