Showboat $53+$12 hand - bubble has just burst

[Wubbie075]

A couple of hands after we made it into the money... we're 5 handed and I'm in the BB... I am second guessing myself on my decision here but I know the results are really affecting my opinion of what I should have done so I need a little objective advice for this hand..

Button seemed solid and somewhat aggressive but never totally out of line... was not afraid of a coinflip as he got into a few in the past couple of orbits... he has something in the area of 110K chips

SB was shortstack with 19K before posting and just successfully folded his way into the money so I have not seen him play much at all since we've been at the same table

I'm in BB with around 60K before posting

Blinds 3000/6000 no ante

1st and 2nd positions fold

button raises to 18K

SB moves all in for 19K

I check my cards and find 66.....???