Class B Misdemeanor Punishment?

[dizzy]

I am being charged with a Class B Misdemeanor, of theft over 50 under 500. I am trying to figure out what the punishments are for this charge. I have never been charged with any kind of misdemeanors/felonies in the past. I have never even had a traffic ticket. I was accused of stealing a gift card. I had every intention of turning the card over to the service desk, but forgot I had it and left the store. Later that night I went to the store and bought stuff for work thinking I was using my card. What exactly are the punishments for this type of charge? Thank you