The money does not become the state's. The state is only holding it, and it keeps holding it until somebody with a right to it asks.
Search Idaho — free, officialGoes straight to the Idaho State Treasurer. We take no cut and ask for nothing.
The state will almost never contact you first. If somebody phones and offers to "release" your money for a fee, that is not Idaho — that is a finder, and you do not need one.
And the honest number: most people find tens of dollars, not thousands. It is still your money, and the search costs nothing but twelve minutes.
Not here yet? The official office for all fifty states is listed at unclaimed.org.
Courts and regulators order refunds every week and hardly anybody collects them. We publish the open ones with the official link beside each, and it costs nothing to look.
See this week's list