Fair Value Measurement (Narrative) (Details) - USD ($)	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Fair Value Disclosures [Abstract]
Contractually Specified Servicing Fee, Late Fee, and Ancillary Fee Earned in Exchange for Servicing Financial Asset	$ 5,900,000	$ 6,000,000.0
Unrealized gains arising during the period	9,551,000	6,453,000
Changes in unrealized gains and losses on junior subordinated debentures carried at fair value, net of taxes	7,068,000	4,775,000
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	7,016,000	(2,372,000)
Residential Mortgage Banking Revenue
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	$ 889,000	$ 189,000

Amount of contractually specified servicing fee, late fee, and ancillary fee recognized as income for servicing asset and servicing liability.

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For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount, after tax, before reclassification adjustment, of unrealized gain (loss) from increase (decrease) in instrument-specific credit risk of financial liability measured under fair value option.

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