Idaho constitution
Article V
Section 2

The judicial power of the state shall be vested in a court for the trial of impeachments, a Supreme Court, district courts, and such other courts inferior to the Supreme Court as established by the legislature. The courts shall constitute a unified and integrated judicial system for administration and supervision by the Supreme Court. The jurisdiction of such inferior courts shall be as prescribed by the legislature. Until provided by law, no changes shall be made in the jurisdiction or in the manner of the selection of judges of existing inferior courts.