Idaho Code § 31-2125
When any warrant of any municipal or quasi-municipal corporation, specially chartered city, school district of any kind or class, specially chartered school district, drainage district, stumpage district, highway district, or other quasi-municipal district, now or hereafter created or organized, is presented for payment to the treasurer thereof, and is not paid for want of funds, the treasurer must indorse thereon "Not paid for want of funds," annexing the date of presentation, specifying the rate of interest that such warrant shall draw, after presentation, which rate shall be the rate fixed in such resolution, sign his name thereto, and thereafter the said warrant shall draw interest at the rate specified in such indorsement. If the county treasurer is redeeming warrants for the districts listed above, the procedures used shall be those identified in section 31-1512, Idaho Code.
Idaho Code § 31-2125