What level of detail should be included in a CV when listing the courses assisted?
I've never been on a hiring committee, but I can tell you what's standard in my field (mathematics): something basically similar to your second option. I would probably put it in a more condensed format, for example:

Courses Assisted


A Hard Course (Fall 2013)
An Easy Course (Spring 2014, Fall 2014)
and so on


No need to include course numbers (which mean nothing to anyone outside your university) or instructor names (even the most diligent hiring committee is unlikely to call professors you've taught under, beyond the teaching references you personally solicit).

Your third option (the table) is very hard to read, and includes a lot of information that the hiring committee is unlikely to need or care about.