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Debt Securities, Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023		Dec. 31, 2022
Continuous unrealized loss position of securities [Abstract]
Impairment loss realized in comprehensive income	$ 0
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	1,558		$ 173,165
Twelve months or longer	165,580		0
Fair value	167,138		173,165
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	(202)		(12,152)
Twelve months or longer	(11,656)		0
Unrealized losses	(11,858)		(12,152)
BBB+ or Better Rating [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Fair value	22,490
Not Rated [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Fair value	2,740
U.S. Federal Agencies [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	0		1,142
Twelve months or longer	140		0
Fair value	140		1,142
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	0		(150)
Twelve months or longer	(6)		0
Unrealized losses	(6)		(150)
Mortgage-Backed Securities [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	0		38,074
Twelve months or longer	34,080		0
Fair value	34,080		38,074
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	0		(4,879)
Twelve months or longer	(5,531)		0
Unrealized losses	(5,531)		(4,879)
State and Political Subdivisions [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	753	[1]	28,356
Twelve months or longer	24,471	[1]	0
Fair value	25,224	[1]	28,356
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	(7)	[1]	(2,276)
Twelve months or longer	(2,476)	[1]	0
Unrealized losses	(2,483)	[1]	(2,276)
U.S. Treasuries [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	0		100,660
Twelve months or longer	103,438		0
Fair value	103,438		100,660
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	0		(4,280)
Twelve months or longer	(2,594)		0
Unrealized losses	(2,594)		(4,280)
Corporate Debt Securities [Member]
Securities in continuous unrealized loss position, fair value [Abstract]
Less than twelve months	805		4,933
Twelve months or longer	3,451		0
Fair value	4,256		4,933
Securities in continuous unrealized loss position, unrealized losses [Abstract]
Less than twelve months	(195)		(567)
Twelve months or longer	(1,049)		0
Unrealized losses	$ (1,244)		$ (567)
[1] Of our state and political subdivision securities, $22.49 million are rated BBB+ or better and $2.74 million are not rated.

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