XML 71 R56.htm IDEA: XBRL DOCUMENT v3.22.0.1
Acquisition of Tokio Millennium Re (Fair Value of Net Assets Acquired and Liabilities Assumed) (Details) - TMR
 12 Months Ended
Mar. 22, 2019
USD ($)
state
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Business Acquisition [Line Items]      
Excess purchase price over the fair value of net assets acquired assigned to goodwill $ 13,094,000    
Finite-lived intangible assets $ 11,200,000    
Acquired finite-lived intangibles, weighted average amortization period 10 years 6 months    
Indefinite lived $ 6,800,000 $ 0  
Value of business acquired, amortization period 2 years    
Value of business acquired $ 287,600,000    
Impairment loss   $ 6,800,000  
Deferred tax liability related to the estimated fair value of the intangible assets recorded 2,281,000    
Deferred tax liability related to other adjustments $ 2,606,000    
Insurance licenses      
Business Acquisition [Line Items]      
Number of states, ability to write reinsurance | state 50    
Impairment loss     $ 6,800,000