The court may order a stay of entry of judgment upon a verdict or decision for a period not exceeding the time required for the hearing and determination of a motion for new trial or for judgment notwithstanding the verdict or to set the verdict aside or to dismiss the action or for amended findings, and after such determination may order a stay of entry of judgment for not more than 30 days. In granting a stay of entry of judgment pursuant to this rule for any period exceeding 30 days after verdict or decision, the court, in its discretion, may impose such conditions for the security of the adverse party as may be deemed proper.