I'm guessing those are pretty much idle temps and they're a bit high, yes. Since you're using the stock cooler, that's not uncommon though. Idle (or near idle) temps aren't really a major concern though, it's load temps that really matter.
Regardless, a 212+ will help quite a bit for both idle and load temps. Depending on your actual ambient temp, I'd say you should expect ~35C or slightly less with the 212+ at idle.
I have a 212 Evo and idle at ~30C, but my ambient is 23C, so relatively cool.