Idaho Code § 57-206
The interest coupons which shall be attached to each such bond shall be numbered from one upwards consecutively commencing with that coupon first maturing, and all such interest coupons shall state on the face thereof the amount thereof, name of the issuing corporation, the identifying series and issue and number of the bond to which it is attached and each such coupon shall provide for the payment of the interest accruing semiannually upon said bond and said interest coupons shall be payable semiannually, and at the same place or places of payment as fixed in such bond and shall be signed by the treasurer of the issuer by his written or facsimile signature: provided, however, that the first and last coupons of any bond series or issue may provide for the payment of interest for a shorter or longer period than six (6) months but not in excess of one (1) year.
Idaho Code § 57-206