Idaho Code § 50-2522
If any section or provision of this chapter be adjudged unconstitutional or invalid for any reason, such adjudication shall not affect the validity of this chapter as a whole, or of any section or provision hereof, which is not specifically so adjudicated unconstitutional or invalid; provided, however, if any section or provision of this chapter concerning the payment to the public utilities shall be adjudged unconstitutional or invalid for any reason in such a way that the payment to the public utilities or the creation of the funds for that purpose is adjudged to be invalid or unconstitutional then such invalidity or unconstitutionality shall invalidate this chapter in its entirety and to this end and in this event the provisions of this chapter are declared to be nonseverable.
Idaho Code § 50-2522