(reinsurer sought unpaid premium for reinsurance of crop loss insurance issued by subsidiary of bankrupt debtor, and debtor sought return of premium amounts previously paid; court determined that it was clear that parties intended and understood the contract to provide reinsurance coverage and be supported by consideration; although subsidiary did not sign reinsurance contract, contract defined reinsurance to include both debtor and its subsidiary and debtor signed contract on subsidiary’s behalf; reinsurer entitled to full premium amount).