Did I do the right thing?

[The Crusher]

I was in a $100 Tourny this past weekend and it was down to three guys. I'm small blind for 15k. I was dealt K-J offsuit. The guy on the button goes all in, which was about 100k. If I call, I still would have about 20k if I lose, so I called. The big blind folds. He turns over his cards, K-A offsuit. He was ticked (understatement) that I would call, cuz I only had 15k invested in the pot and I risked allmost all my chips with k-j offsuit. I ended up catching a pair of jacks knocking him out pissing him off even more....naturally.
I realized I won because of I got lucky and caught a Jack, but did I make the right move calling in this position with those cards and with little money invested?