Investment Securities (Proceeds From Sales Of Securities And Components Of Investment Securities Gains And Losses) (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investment [Line Items]
Proceeds from Sale of Available-for-sale Securities		$ 86,240	$ 69,809	$ 602,475
Proceeds from sale of equity securities		17	0	2
Proceeds from sales of other securities		20,714	11,002	0
Total proceeds	[1]	106,971	80,811	602,477
Investment securities gains (losses), net	[1]	20,506	30,059	11,032
Available-for-sale Securities [Member]
Investment [Line Items]
Gains realized on sales		0	0	21,096
Loss realized on sales		(20,273)	(3,284)	0
Equity securities [Member]
Investment [Line Items]
Gains realized on sales		17	0	2
Fair value adjustments, net		(943)	187	37
Other Investments [Member]
Investment [Line Items]
Gains realized on sales		1,670	1,611	0
Other securities, loss realized on sales		(3,798)	(159)	0
Fair value adjustments, net		$ 43,833	$ 31,704	$ (10,103)

[1] Available for sale debt securities, equity securities, and other securities.