51-117. OFFICIAL STAMP.
The official stamp of a notary public:
(1) Must include the notary public’s name, the words "Notary Public," the words "State of Idaho," and the notary’s state-issued commission number;
(2) Must include a serrated or milled-edge border in a rectangular or circular form;
(3) May include the words "my commission expires:" followed by the notary’s current commission expiration date;
(4) Must be capable of being copied together with the record to which it is affixed or attached or with which it is logically associated; and
(5) May not include anything more than that which is allowed in subsections (1) through (3) of this section.

51-118. STAMPING DEVICE.
(1) The stamping device for tangible records must be an inked stamp that provides an image of the notary’s official stamp that meets the requirements of section 51-117, Idaho Code, and that is readily visible upon copying. The stamp shall not exceed two and one-fourth (2.25) inches by one (1) inch if rectangular or one and three-fourths (1.75) inches in diameter if circular.
(2) The stamping device for electronic records must be an electronic device or process that provides an image of the notary’s official stamp that meets the requirements of section 51-117, Idaho Code, and that is readily visible upon copying.

IDAHO NOTARY HANDBOOK - CH 2 - NOTARY JOURNAL
It's a good idea for Idaho notaries to keep a notary journal in which all notarial acts are recorded. The journals should be either a permanent, bound paper journal designed to deter fraud or a permanent, tamper-evident electronic journal.
Each journal entry should include the date and time of the notarization; the type of notarial act, a description of the document (usually the document date and type); the type of identification used; the signature, printed name, and address of the person for whom the notarial act was performed (except for certified deposition transcripts or certified copies); and the fee (if any) charged for the notarization.