Idaho Code § 20-209H
The state board of correction shall establish an account in the name of each inmate confined in a correctional facility. All moneys in the inmate's possession upon admission, all moneys earned from institutional employment and all moneys received by the inmate from any other source, other than money that is contraband, shall be deposited in the inmate's account. If the court ordered an inmate to make restitution under section 19-5304, Idaho Code, and the restitution is still owing, then twenty percent (20%) of each deposit in the inmate's account shall be paid to the state board of correction who shall, within five (5) days after the end of the month, pay such moneys to the clerk of the court in which the restitution order was entered for payment to the victim. The provisions of this section shall apply to any inmate confined in a correctional facility on or after the effective date of this section.
Idaho Code § 20-209H