Idaho Code § 20-524A

If the juvenile offender is committed to the custody of the department of juvenile corrections pursuant to chapter 5, title 20, Idaho Code, the department shall reimburse the county for the period of time in excess of five (5) calendar days during which the juvenile offender is housed at a detention center. This time period shall begin to run on the first business day the department receives a copy of the order of commitment, executed by the court. Orders received by the department after 3 o’clock p.m., mountain standard time, on a business day, will be considered to have been received the next business day. Facsimile transmissions of the order are acceptable.