Idaho Code § 28-21-102
Every assignor, his heirs, executors or administrators, of every such instrument in writing, is liable to the action of the assignee thereof, his executors, or administrators, if such assignee has used diligence, by the institution and prosecution of a suit against the maker of such instrument, or against his heirs, executors or administrators, for recovery of the money or property due thereon, or damages in lieu thereof; but if the institution of such suit would have been unavailing, or the maker had absconded or left, or was absent from the state when such assigned instrument became due, or absconds within twenty (20) days thereafter, such assignee, his heirs, executors or administrators, may recover against the assignor, or his heirs, executors or administrators, as if due diligence by suit had been used. By "due diligence" shall be understood the institution of suit within sixty (60) days after the maturity of the obligation.
Idaho Code § 28-21-102