Idaho Code § 70-1716
Each port district may, with the assent of two-thirds (2/3) of the qualified voters of the district voting thereon at a port election called for that purpose, and held subject to the provisions of section 34-106, Idaho Code, contract indebtedness or borrow money for district purposes and may issue general obligation bonds therefor, provided that total indebtedness of the district at any such time, excluding that indebtedness evidenced by revenue bonds, shall not exceed one percent (1%) of the market value for assessment purposes of the taxable property in the district to be ascertained by the last assessment for state and county purposes previous to incurring the indebtedness.
The district may issue general district bonds evidencing any such indebtedness, payable at any time not exceeding thirty (30) years from the date of the bonds.
Idaho Code § 70-1716