K's pf facing huge all in?

[otter]

$5-10nl

I have K,K and raise to $45 UTG ($1300 behind), two players to my left goes all in for $375. Then the next player goes all in for $1400! Naturally everyone folds to me.

The player two to my left is a maniac and is steaming. He can have anything from a weak A, a small/mid pair and perhaps better. Honestly his all in didn't mean much to me.

The next guy has only been there for maybe half an hour and I haven't seen any of his hands, however I have seen him call bets on the river and then fold. He probably went through $800 already and rebought.

Is this an easy fold or an easy (perhaps not so easy) call?