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Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Variable Interest Entity [Line Items]    
Carrying value of investments in limited partnerships $ 154,997 $ 114,198
Variable Interest Entity, Not Primary Beneficiary | Venture Capital Funds    
Variable Interest Entity [Line Items]    
Carrying value of investments in limited partnerships 13,300 13,000
Maximum exposure to loss 15,400 15,600
Variable Interest Entity, Not Primary Beneficiary | Land Banking Deposits    
Variable Interest Entity [Line Items]    
Maximum exposure to loss 9,000 15,700
Carrying value of deposits with land banking entities $ 9,000 $ 15,700