I do not think that you can use the IDEA logo itself even though it is possible to copy the logo off their web page. This web site is copyrighted. However, if you feel you want to use it, you will have to contact IDEA about it directly.
As Natalie mentioned, IDEA offers some images that are for all to use.
I agree with LaRue, I use their logo and my IDEAFIT website address on my business cards. If you feel you need clarification, contact IDEA at:
IDEA FitnessConnect E-mail: [email protected]
Toll-free: (800) 999-4332, ext. 7
I Hope this Helps!