An Idaho Joiner Order is a court order that allows a person to become a party to an existing legal action when the individual has an interest in the outcome of the case. The Idaho Joiner Order allows a person to join a lawsuit as a party, even if they are not originally named in the suit. There are two main types of Idaho Joiner Orders: voluntary joiner and involuntary joiner. Voluntary joiner occurs when the parties to the suit agree to allow the joiner, while involuntary joiner occurs when the court orders the joiner. A joiner order can be used to add a defendant to a lawsuit, as well as to add a plaintiff to the suit. The Idaho Joiner Order ensures that all parties with an interest in the outcome of the case are represented in the legal action.