(a)
The official directors shall serve without compensation, except that they shall be reimbursed for their actual and necessary expenses incurred in the performance of their duties, or at the discretion of the board, may receive a reasonable per diem payment and mileage charge as reimbursement for living and traveling expenses incurred in the performance of duties away from their principal areas of residence. The amount of such per diem payment shall not exceed the rate established by the state for any calendar day. No director shall
receive per diem both in the course of his official duties and from the corporation for the same calendar day.
(b)
All other directors may, at the discretion of the board, be paid a stipend in addition to reimbursement for their actual and necessary expenses incurred in the performance of their duties or reasonable per diem payment and mileage charge. The amount of any per diem payment shall not exceed the rate established by the state for any calendar day. The board shall determine the amount of the stipend received by public directors, provided, however, that such stipend shall not exceed one hundred dollars ($100) for any calendar day. Additionally, public directors may not receive stipends for more than 25 days in any calendar year.