Idaho Code § 32-1217: Termination of income withholding by the court in a judicial proceeding.

If the department is unable to deliver payments under the income withholding order for a period of three (3) months due to the failure of the obligee to notify the department of a change of address, the court shall terminate the income withholding order, and shall mail a copy of the termination order to the employer and to the obligor. The court shall return all undeliverable payments to the obligor.