OLDWICK, N.J.–(BUSINESS WIRE)–AM Best has revised the outlook to positive from stable for the Long-Term Issuer Credit Rating (Long-Term ICR) and affirmed the Financial Strength Rating (FSR) of B++ (Good) and the Long-Term ICR of “bbb” of First Mutual Insurance Company (First Mutual) (Smithfield, NC). The outlook of the FSR remains stable. The Credit Ratings reflect First Mutual’s balance sheet strength, which AM Best categorizes as adequate, as well as its strong operating performance, limite