Idaho Code § 57-724A
"Earnings" shall mean all revenues generated from the management of endowment lands and their related endowment funds including, but not limited to, timber sale proceeds, lease fees, interest, dividends, and gains as defined in section 57-724, Idaho Code; provided however, for the permanent fund of each endowment, on and after July 1 of the calendar year following the first calendar year in which gains, as calculated under the provisions of section 57-724, Idaho Code, have been achieved by the permanent fund of such endowment fund, dividends and interest shall be incorporated into the calculation of gains as defined in section 57-724, Idaho Code, and shall not be a separate item of earnings for such permanent fund. "Earnings" does not include mineral royalties or land sale proceeds.
Idaho Code § 57-724A