Investment Securities, Equity Securities Changes in Fair Value Recognized in Net Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Debt and Equity Securities, FV-NI [Line Items]
Net losses recognized during the period	$ (14)	$ (178)	$ (45)	$ (304)
Less net gains recognized during the period on equity securities sold during the period	0	0	(61)	0
Net unrealized gains (losses) recognized during the reporting period on equity securities still held at period end	(14)	$ (178)	16	$ (304)
Equity Securities, Amortized Cost Basis	1,409		1,409		$ 2,207
Equity securities with a readily determinable fair value, at fair value	1,279		1,279		2,273
Mutual funds [Member]
Debt and Equity Securities, FV-NI [Line Items]
Equity Securities, Amortized Cost Basis	1,399		1,399		1,429
Equity securities with a readily determinable fair value, at fair value	1,207		1,207		1,234
Equity securities [Member]
Debt and Equity Securities, FV-NI [Line Items]
Equity Securities, Amortized Cost Basis	10		10		778
Equity securities with a readily determinable fair value, at fair value	$ 72		$ 72		$ 1,039