Could I Get Some Help Identifying this Spider Please?

I found this in my back yard and it was quite large compared to spiders I normally see. I am currently feeding it flies but he doesn't seem active enough to catch them. He is about quarter sized, black, brown, and a light brown. I live in South West Idaho. Here's a link to an album full of pictures of it. http :// imgur.com/a/6MkUY#1 Remove spaces.
Thanks!