Idaho Code § 19-1122
If in any proceedings before a special inquiry judge, a person refuses, or indicates in advance a refusal, to testify or provide evidence of any other kind on the ground that he may be incriminated thereby, and if a prosecuting attorney requests the court to order that person to testify or provide the evidence, the court shall then hold a hearing and shall so order unless it finds that to do so would be clearly contrary to the public interest, and that person shall comply with the order.
If, but for this section, he would have been privileged to withhold the answer given or the evidence produced by him, the witness may not refuse to comply with the order on the basis of his privilege against self-incrimination; but none of the testimony nor evidence presented by the witness relative to the issue under investigation before the special inquiry judge, nor any information directly or indirectly derived from his testimony, can be used against him in any further criminal proceeding. He may nevertheless be prosecuted for failing to comply with the order to answer, or for perjury or for offering false evidence to the special inquiry judge.
Idaho Code § 19-1122