Where is the JavaFX scene builder executable in Mac OSX for Intellij IDEA?

I am creating a JavaFX 2 application using Intellij IDEA in Mac OSX and can't find the scene builder executable. My application runs fine but I am doing some complicated UI designs that I would like to be able to manipulate in scene builder. Do I need to install it manually? If so, where do I get the correct version of scene builder? I thought it was included with the JDK. I am using JDK 7u45.