Idaho lawsuits are controlled by the Idaho Rules of Civil Procedure. Once a lawsuit is filed, you must meet the response deadlines (normally 20 days), as well as any other deadlines for cross claims, counter claims, and affirmative defenses. If you fail to timely respond, then your opponent can apply for (and obtain) a default order against you, which has all the force and effect of a court order, and which cannot be overturned absent some fraud or misdealing on your opponent's part (such as improper or fraudulent service). If you've been sued (or if you're contemplating a lawsuit), it's important to review the case immediately with your attorney. They can help you see the relevant facts, legal arguments, and compliance rules necessary to avoiding legal pitfalls.