Idaho Code § 41-1441

Agreements may be made among casualty insurers with respect to the equitable apportionment among them of insurance which may be afforded applicants who are in good faith entitled to but who are unable to procure such insurance through ordinary methods, and such insurers may agree among themselves on the use of reasonable rate modifications for such insurance, such agreements and rate codifications to be subject to the approval of the director. Premium charges for the assigned risk plan shall not be excessive, inadequate, nor unfairly discriminatory and shall provide sufficient revenue to make the plan self-sustaining and self-supporting.