It is more than likely that you will receive a civil demand from the store's attorney for the cost of the merchandise, plus attorney's fees plus additional $150 penalty fee.
Also, it is likely that you would receive a letter from the court with a court date if the criminal charge of shoplifting is filed.
Unfortunately, if the store decides to pursue the criminal charges against you you would be charged with the summary offense if the merchandise that was stolen is under $150 which carries a maximum jail time of up to 90 days and a fine of up to $300.
Because your prior shoplifting case was ARD, it means you were not convicted of the shoplifting and this prior case of shoplifting will not count against you.
If the merchandise stolen is over $150, it would be a second degree misdemeanor, which carries a maximum penalty of up to 5 years in jail and fines up to $10,000.
In any case, if you do receive a letter from the court with a court date, you would need to contact a local criminal defense attorney
, as it is possible that if you are convicted of the shoplifting criminal charge, that the judge can sentence you to some jail and / or probation, community service and a fine.
I wish you the best of luck!