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Goodwill and Intangible Assets - Narrative (Details) - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Dec. 11, 2007
Business Acquisition [Line Items]        
Goodwill $ 181,831 $ 181,831 $ 181,831  
James River Group, Inc.        
Business Acquisition [Line Items]        
Percentage of outstanding shares       100.00%