Idaho Code § 43-204B
The bylaws of the district may set forth a provision eliminating or limiting the personal liability of a director to the district or its qualified electors for monetary damages for breach of fiduciary duty as a director, provided that such provision shall not eliminate or limit the liability of a director:
(c) For any transaction from which the director derived an improper personal benefit.
No such provision shall eliminate or limit the liability of a director for any act or omission occurring prior to the date when such provision becomes effective.
[43-204B, added 1988, ch. 325, sec. 2, p. 988.]