Idaho Code § 31-4216
An authority shall have power to issue bonds, from time to time, in its discretion, for any of its corporate purposes. An authority shall also have power to issue refunding bonds for the purpose of paying or retiring bonds previously issued by it. In order to carry out the purposes of this chapter, an authority may issue, upon proper resolution, bonds on which the principal and interest are payable:
Any such bonds may be additionally secured by a pledge of any income or revenues of the authority, or a mortgage of any housing project, projects or other property of the authority. Any pledge made by the authority shall be valid and binding from the time when the pledge is made and recorded; the revenues, moneys or property so pledged and thereafter received by the authority shall immediately be subject to the lien of the pledge without any physical delivery thereof or further act, and the lien of any such pledge shall be valid and binding as against all parties having claims of any kind in tort, contract or otherwise against the authority, irrespective of whether the parties have notice thereof.
Neither the commissioners of any authority nor any person executing the bonds shall be liable personally on the bonds by reason of the issuance thereof. The bonds and other obligations of an authority shall state on their face that they shall not be a debt of the county, the state or any political subdivision thereof and neither the county, the state nor any political subdivision thereof shall be liable thereon, nor in any event shall such bonds or obligations be payable out of any funds other than those of said authority. Bonds of an authority are declared to be issued for an essential public and governmental purpose and to be public instrumentalities and, together with interest thereon and income therefrom, shall be exempt from taxes.
Idaho Code § 31-4216