Gosh there are seminars and training classes all the time. I’m quite surprised that you couldn’t answer your question by contacting IDEA or ACE. Call them in person and ask for the staff member who schedules training classes and seminars. Where in the pacific northwest? That could be important. I also suggest that you contact ACSM and NASM for their class schedule.
there are many more than those already mentioned, such as FitPro http://fitpronow.com/content/2016-fitness-conventions-conferences-0, Mania https://scwfit.com/mania/, Empower http://empowerfitnessevents.com/ and Exercise Etc. http://exerciseetc.com/schedule.html.
The Pilates and Yoga communities also have ongoing workshops all over the place. I am sure that will be one that suits your need.
This is a new site that tries to get all sorts of trainings posted on one site.
Also, if you are on Facebook, there is a group called Group Fitness Instructors in the PNW. That has a bunch of trainings posted, and they are not just group-ex. Whenever I see a personal training item come up, I post it there.
Sadly, you just missed IDEA’s PTI – West in Seattle last weekend. I was great!