XML 54 R41.htm IDEA: XBRL DOCUMENT v3.21.2
Business Combination (Summary of Intangible Assets Acquired) (Details) - NORCAL Group
$ in Thousands
May 05, 2021
USD ($)
Business Acquisition [Line Items]  
Total $ 14,000
Licenses  
Business Acquisition [Line Items]  
Indefinite-lived intangible assets acquired 13,000
Trade name  
Business Acquisition [Line Items]  
Finite-lived intangible assets acquired $ 1,000
Acquired intangible assets useful life (in years) 3 years