Since it is a larceny charge, the District Court has to wait for a complaint and warrant from the prosecutor's office before they can arraign him. Typically, an arraignment will occur in about 2-3 days after he is lodged in the jail. Some jails have what are called "pre-set" bond amounts that allow people arrested for specific crimes to pay a pre-determined amount and be released. They are then released and given a court date on their way out of the jail. This happens a lot with charges like drunk driving, i.e. everyone on a OWI 1st pays $500, etc. On an OWI, the court can arraign the defendant by using the ticket.
Larcenies don't have a ticket to use for the arraignment, so that's why the court has to wait to hear from the prosecutor's office before they can schedule the hearing. He will be arraigned much sooner if he is lodged in the jail. Otherwise, it could be as long as several weeks. Good luck.