Idaho Code § 60-109

Whenever any law of this state requires publication of any notice or proceeding, said requirement shall be satisfied by publishing the same once each calendar week on the same day of each week for the number of times equal to the number of weeks mentioned in the requirement in any regular issue of a newspaper published on one or more days of each week; or when a specified number of days is required, a ten (10) days’ notice shall be satisfied by two (2) such weekly publications, a twenty (20) days’ notice by three (3) such publications, and a thirty (30) days’ notice by five (5) such publications.