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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]  
Broker concentration risk The following table summarizes the percentage of the Company’s gross premiums written generated from or placed by the largest brokers:
Broker

Year Ended December 31,

202120202019
Marsh & McLennan Companies and its subsidiaries18.3 %13.3 %9.6 %
Aon Corporation and its subsidiaries12.2 %12.0 %12.2 %