I'll definitely ddocument everything from now on, but my 6-month plan is to leave. I'm the second most experienced person in the company and don't feel like working for an entry-level pay.
Documentation is fine if you get into a wrongful discharge situation or you're looking to fight opinion of you but unless you're planning to sue these guys, or you really think you're going to cause an epiphany for the CEO, it's better to just GTFO and move on with your life.
Good-luck!