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Segment Information (Tables)
 12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
Premiums Earned by Segments
The following table sets forth our net premiums earned:
   
Years Ended December 31,202120202019
 Property and casualty insurance business
Net premiums earned
Other liability$299,961 $316,098 $318,412 
Fire and allied lines253,485 277,515 285,205 
Automobile255,279 324,420 345,637 
Workers' compensation61,690 75,953 87,376 
Fidelity and surety30,989 28,001 25,539 
Reinsurance assumed59,745 30,417 21,861 
Other1,674 2,678 2,942 
Total net premiums earned$962,823 $1,055,082 $1,086,972