Idaho Code § 72-1433
In event any city or fire district of this state shall fail to contribute to the public employee retirement system board for any cause whatever, the provisions of this chapter shall apply to and be available for the payment of benefits to firefighters employed by such municipality or subdivision if the contribution required of such city or fire district shall have been, in fact, paid from any source whatever. In the event that any city or fire district shall eliminate its paid fire department, the city or fire district shall continue to make its contribution prescribed by section 72-1432, Idaho Code, necessary to fund the payment of benefits vested in any paid firefighter, or then being paid to any retired firefighter or beneficiary, of such city or fire district.
Idaho Code § 72-1433