According to the Idaho Department of Insurance, Idaho Code 49-117 (18) is the law containing auto insurance requirements for ID.
This Idaho state law states that" Proof of financial responsibility" means proof of ability to respond in damages for liability, on account of accidents occurring subsequent to the effective date of the proof, arising out of the ownership, maintenance or use of a motor vehicle, in the amount of twenty-five thousand dollars ($25,000) because of bodily injury to or death of one (1) person in any one (1) accident, and, subject to the limit for one (1) person, in the amount of fifty thousand dollars ($50,000) because of bodily injury to or death of two (2) or more persons in any one (1) accident, and in the amount of fifteen thousand dollars ($15,000) because of injury to or destruction of property of others in any one (1) accident.
So in simple language means that Idaho's minimum required car insurance limits are 25/50/15. This stands for Bodily Injury Liability coverage of $25,000 per injured person up to a total of $50,000 per accident, and Property Damage Liability coverage with a minimum limit of $15,000.
You should be able to give this information to the insurance company in the state outside of Idaho to get your SR-22 that is being required of you.