You are given a text that consists of multiple sentences. Your task is to perform abstractive summarization on this text. Use your understanding of the content to express the main ideas and crucial details in a shorter, coherent, and natural sounding text.

PEORIA, Ill.--(BUSINESS WIRE)--RLI Corp. (NYSE: RLI) -- RLI Corp. announced today that its A+ (Superior) financial strength rating (FSR) has been affirmed by AM Best Company for the following insurance subsidiaries: RLI Insurance Company, Mt. Hawley Insurance Company and Contractors Bonding and Insurance Company (CBIC). AM Best also affirmed the Long-Term Issuer Credit Ratings (ICR) for each RLI company. The RLI Corp. ICR of a was affirmed and the ICRs of aa have been affirmed for the following subsidiaries: RLI Insurance Company, Mt. Hawley Insurance Company and CBIC. AM Best, a global credit rating agency, news publisher and data analytics provider specializing in the insurance industry, stated in its press release that the ratings reflect RLIs balance sheet strength, which AM Best categorizes as strongest, as well as its strong operating performance, favorable business profile and very strong enterprise risk management. ABOUT RLI RLI Corp. (NYSE: RLI) is a specialty insurer serving niche property, casualty and surety markets. The company provides deep underwriting expertise and superior service to commercial and personal lines customers nationwide. RLIs products are offered through its insurance subsidiaries RLI Insurance Company, Mt. Hawley Insurance Company and Contractors Bonding and Insurance Company. All of RLIs subsidiaries are rated A+ Superior by AM Best Company. RLI has paid and increased regular dividends for 45 consecutive years and delivered underwriting profits for 24 consecutive years. To learn more about RLI, visit www.rlicorp.com.

Answer: AM Best Affirms A+ (Superior) Rating for RLI Corp., RLI Insurance Co., Mt. Hawley Insurance Co. and Contractors Bonding and Insurance Co.