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Sale of Certain Agency Business - Narrative (Details)
6 Months Ended 12 Months Ended
Dec. 14, 2021
USD ($)
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
Interger
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Other gains     $ 11,664,000 $ 260,000 $ 0
Venture Holdings, Inc          
Other gains   $ 8,900,000      
Purchase price   10,000,000.0      
Paid in cash   $ 1,000,000.0      
Number of promissory notes | Interger     2    
Payment annum rate     7.00%    
Payment maturity period     5 years    
Repayments of Debt $ 3,000,000.0        
Venture Holdings, Inc | Prepayment Penalty          
Repayments of Debt     $ 0    
Venture Holdings, Inc | Promissory Notes          
Remaining balance paid by promissory note     9,000,000.0    
Venture Holdings, Inc | Promissory Notes One          
Remaining balance paid by promissory note     6,000,000.0    
Venture Holdings, Inc | Promissory Notes Two          
Remaining balance paid by promissory note     $ 3,000,000.0