Idaho Const. art. V, § 13

The legislature shall have no power to deprive the judicial department of any power or jurisdiction which rightly pertains to it as a coordinate department of the government; but the legislature shall provide a proper system of appeals, and regulate by law, when necessary, the methods of proceeding in the exercise of their powers of all the courts below the Supreme Court, so far as the same may be done without conflict with this Constitution, provided, however, that the legislature can provide mandatory minimum sentences for any crimes, and any sentence imposed shall be not less than the mandatory minimum sentence so provided. Any mandatory minimum sentence so imposed shall not be reduced.