Stacks?
Read?
Have you shown down a hand recently? If so, what was it?

Without any other info, I'm reraising here. Button has a very wide range here, and he may be checking to see if you have AK that missed.

Your preflop raise sucks, BTW. I'd pop it to $8, maybe $10. You have a great hand preflop, but will likely be playing from out of position, so you need to press your edge while you have it and make any cute plays like the one you are facing here become very expensive for your opponents. It's also a good idea to make this raise with total garbage on occasion balance your play. I wouldn't make it with a hand that cain gain a lot of value easily by seeing a flop like small pairs and small suited connectors.