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Fair Value Measurement (Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Loans and leases, at fair value	$ 282,511,000		$ 282,511,000		$ 285,581,000
Unrealized (losses) gains arising during the period	(14,638,000)	$ (15,064,000)	11,174,000	$ (27,767,000)
Changes in unrealized gains and losses on junior subordinated debentures carried at fair value, net of taxes	(10,832,000)	(11,189,000)	8,269,000	(20,625,000)
Residential Mortgage Banking Revenue
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	(602,000)	4,200,000	(521,000)	(6,900,000)
Other Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	$ (7,000,000)	$ (15,200,000)	$ 2,500,000	$ (36,300,000)

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Fair Value, Portfolio Loans

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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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