Divorce Support Forums: Can Idaho courts make him pay 100% of his income?

I have a question. My new husband is facing a huge problem.
When his ex filed for divorce, there was no custody/visitation/or child support awarded because the children had not been residents of Idaho for at least six months. ( She took them and left Texas, moving back to Idaho ) My ex has been paying 940.00 a month anyway. Now, a year later, his ex has retained an attorney and the good news is that his child support is only going to be 870.00
Our problem is that because his ex does not work, he is responsible for 74% of any medical expenses or day care costs related to her going to school or IF she gets a job.
He has three kids. We checked into daycare costs and if he has to pay 74% of daycare ($ 1406.00 ) plus the 870.00 child support, he would be paying a total of $ 2,276.00 per month. This is more than he nets, which would leave me paying for about 200.00 a month for his children.
My question is doesnt the court leave him at least 50% of his income to live off of? How can they put through a decree that will leave him with NOTHING for himself. This means I have to start paying for all the bills myself including his car payment and insurance. AND I have to pay for his kids too??? His Ex's attorney has assured us this is standard Idaho law and my husband has pre paid legal. He called their advice line and they say this is correct. CAN THIS BE??? PLEASE HELP!!