Banned from walmart until when?

me and two of my friends were in the local walmart without our parents and we were messing around with some of their nerf swords, and a manager came out and told us to leave the store and took the products we were going to buy.afterwords, we (stupidly) walked towards the front and got some gum and when we tried to buy it he came up to us and told us to leave the store and that we were banned and walked us out. im wondering if i go back with my parents at another time, he would call the cops like he said he would or if i wait for about half a year i can go back. the store did not take pictures of us and did not say that the ban would be lifted at a later date as it all happend very quickly. we know that we should have done as he asked but we wernt thinking straight at the time so please help if you have any insight.