Fair Value Measurement (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Loans and leases, at fair value	$ 257,911		$ 257,911		$ 285,581
Unrealized losses arising during the period	(19,677)	$ (4,043)	(8,503)	$ (31,810)
Changes in unrealized gains and losses on junior subordinated debentures carried at fair value, net of taxes	(14,561)	(3,003)	(6,292)	(23,628)
Residential Mortgage Banking Revenue
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	(597)	(7,800)	(1,100)	(14,600)
Other Income
Fair Value, Option, Quantitative Disclosures [Line Items]
Net increase (decrease) in fair value	$ (19,200)	$ (26,400)	$ (16,700)	$ (62,700)