I am 5' 7" and 142 pounds. Is that somewhat fat?

I exercise a lot, too. I go to the gym and do the bike machine and the elliptical. I ride my longboard and skateboard, and i ski a lot. sometimes in summer as well. I have recently gotten over a concussion (from skiing) i am better now, but i cant exercise as hard sometimes. Sorry about so much detail, but yea....am i close to being fat?