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Investments (Unconsolidated Subsidiaries) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated subsidiaries	$ 297,314	$ 305,210
Qualified affordable housing project tax credit partnerships
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated subsidiaries	787	4,088
All other investments, primarily investment fund LPs/LLCs
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated subsidiaries	$ 296,527	$ 301,122

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Investment In Unconsolidated Subsidiaries

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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