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Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Variable Interest Entity [Line Items]    
Carrying value of investments in limited partnerships $ 117,350 $ 107,347
Variable Interest Entity, Not Primary Beneficiary | Land Banking Deposits    
Variable Interest Entity [Line Items]    
Maximum exposure to loss 15,700  
Carrying value of deposits with land banking entities 15,700  
Variable Interest Entity, Not Primary Beneficiary | Venture Capital Funds    
Variable Interest Entity [Line Items]    
Carrying value of investments in limited partnerships 13,300  
Maximum exposure to loss $ 16,100