Idaho Code § 8-704
In any proceeding where the court has ordered either or both parents to pay any amount for the support of a minor child, the court may order either parent or both parents to assign such sum as the court may determine to be equitable to the county clerk, probation officer, or other officer of the court or county officer designated by the court to receive such payment, that portion of salary or wages of either parent due in the future to apply on the amount ordered by the court for the support and maintenance of the minor child. Such order shall be binding upon an employer upon the service of a copy of such order upon such employer and until further order of the court. Any such order may be modified or revoked at any time by the court. Any such assignment made pursuant to court order shall have priority as against any attachment, execution, or other assignment, unless otherwise ordered by the court.
Idaho Code § 8-704