Investment Securities (Amortized Cost and Estimated Fair Values of Investment Securities) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	$ 103,839		$ 116,906
Available-for-sale, Pledged available-for-sale securities, Estimated Fair Value	9,894		4,159
Available-for-sale securities, Gross Unrealized Gains	20		1,339
Available-for-sale securities, Gross Unrealized Losses	9,170		1,263
Available-for-sale, at fair value	94,689		116,982
Held-to-maturity Securities, Amortized Cost	458,957		404,594
Held-to-maturity securities, Gross Unrealized Gains	47		418
Held-to-maturity securities, Gross Unrealized Losses	43,569		3,488
Held-to-maturity securities, Estimated Fair Value	415,435		401,524
Equity securities, at fair value	1,271		1,372
Fair value adjustment recorded through earnings	13,112	$ 8,029
Accounting Standards Update 2016-01 [Member]
Schedule of Available-for-sale Securities [Line Items]
Equity securities, at fair value	1,300		1,400
Accounting Standards Update 2016-01 [Member] | Revision of Prior Period, Change in Accounting Principle, Adjustment [Member]
Schedule of Available-for-sale Securities [Line Items]
Fair value adjustment recorded through earnings	(108)	$ (20)
U.S. Government Agencies [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	22,238		22,932
Available-for-sale securities, Gross Unrealized Gains	9		7
Available-for-sale securities, Gross Unrealized Losses	2,760		634
Available-for-sale, at fair value	19,487		22,305
Held-to-maturity Securities, Amortized Cost	104,847		87,072
Held-to-maturity securities, Gross Unrealized Gains			20
Held-to-maturity securities, Gross Unrealized Losses	8,254		1,231
Held-to-maturity securities, Estimated Fair Value	96,593		85,861
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	400		400
Held-to-maturity securities, Gross Unrealized Gains			2
Held-to-maturity securities, Estimated Fair Value	400		402
Mortgage-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	79,579		91,948
Available-for-sale securities, Gross Unrealized Gains	11		1,318
Available-for-sale securities, Gross Unrealized Losses	6,303		629
Available-for-sale, at fair value	73,287		92,637
Held-to-maturity Securities, Amortized Cost	341,709		302,604
Held-to-maturity securities, Gross Unrealized Gains	47		301
Held-to-maturity securities, Gross Unrealized Losses	35,006		2,248
Held-to-maturity securities, Estimated Fair Value	306,750		300,657
Other Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale securities, Amortized Cost	2,022		2,026
Available-for-sale securities, Gross Unrealized Gains			14
Available-for-sale securities, Gross Unrealized Losses	107
Available-for-sale, at fair value	1,915		2,040
Held-to-maturity Securities, Amortized Cost	12,001		14,518
Held-to-maturity securities, Gross Unrealized Gains			95
Held-to-maturity securities, Gross Unrealized Losses	309		9
Held-to-maturity securities, Estimated Fair Value	$ 11,692		$ 14,604