Shoplifting: fines and a misdemeanor?

I live in Southern California and I got caught at Store Name shoplifting by loss prevention. I was handcuffed for what I thought was about two hours. A police officer never came so they let me go. I signed a report written by one of the loss prevention people and was told that I was getting a fine in the mail and probably a misdemeanor. The theft was valued at $13.67. He had a badge around his neck, probably local law enforcement. What do you think is going to happen?

Also I got taken back inside Store Name (a different chain) by a man who didn't identify himself at all. I had walked back inside and walked around a corner and put back what I had (a couple dollar thing of food) and walked back towards the entrance. And this man was practically body blocking me towards the security office. I wasn't handcuffed and he just took my ID info and made me leave. If I get fined do I have to pay? I didn't sign anything and he never identified himself. I am very confused.