Investment Securities - Held to Maturity (Details)	3 Months Ended
	Mar. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($) security	Mar. 31, 2022 USD ($) security
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, available-for-sale, allowance for credit loss, excluding accrued interest	$ 0
Held-To-Maturity Securities, at Amortized Cost	167,347,000	$ 175,364,000	$ 196,661,000
Gross Unrealized Gains	2,000	1,000	180,000
Gross Unrealized Losses	(2,910,000)	(3,742,000)	(979,000)
Held-To-Maturity Securities, at Fair Value	164,439,000	171,623,000	195,862,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	82,142,000
From 1 - 5 Years	82,861,000
From 5 - 10 Years	2,312,000
Over 10 Years	32,000
Maturities of Debt Securities, at Fair Value:
Within One Year	81,554,000
From 1 - 5 Years	80,545,000
From 5 - 10 Years	2,308,000
Over 10 Years	32,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	43,121,000	148,926,000	110,553,000
12 Months or Longer	100,983,000	0	0
Total	$ 144,104,000	$ 148,926,000	$ 110,553,000
Number of Securities in a Continuous Loss Position | security	402	413	281
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 496,000	$ 3,742,000	$ 979,000
12 Months or Longer	2,414,000	0	0
Total	2,910,000	3,742,000	979,000
Debt securities, available-for-sale, excluding accrued interest, allowance for credit loss, not to sell before recovery, credit loss, previously recorded, expense (reversal)	0
Debt securities, held-to-maturity, allowance for credit loss, excluding accrued interest	0
Equity Securities	2,070,000	2,174,000	1,877,000
State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	156,314,000	163,600,000	181,832,000
Gross Unrealized Gains	2,000	1,000	180,000
Gross Unrealized Losses	(2,421,000)	(3,131,000)	(832,000)
Held-To-Maturity Securities, at Fair Value	153,895,000	160,470,000	181,180,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	82,142,000
From 1 - 5 Years	71,828,000
From 5 - 10 Years	2,312,000
Over 10 Years	32,000
Maturities of Debt Securities, at Fair Value:
Within One Year	81,554,000
From 1 - 5 Years	70,001,000
From 5 - 10 Years	2,308,000
Over 10 Years	32,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	43,121,000	137,773,000	96,088,000
12 Months or Longer	90,439,000	0	0
Total	$ 133,560,000	$ 137,773,000	$ 96,088,000
Number of Securities in a Continuous Loss Position | security	386	397	258
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 496,000	$ 3,131,000	$ 832,000
12 Months or Longer	1,925,000	0	0
Total	2,421,000	3,131,000	832,000
Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	11,033,000	11,764,000	14,829,000
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	(489,000)	(611,000)	(147,000)
Held-To-Maturity Securities, at Fair Value	10,544,000	11,153,000	14,682,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	11,033,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	10,544,000
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	0	11,153,000	14,465,000
12 Months or Longer	10,544,000	0	0
Total	$ 10,544,000	$ 11,153,000	$ 14,465,000
Number of Securities in a Continuous Loss Position | security	16	16	23
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 611,000	$ 147,000
12 Months or Longer	489,000	0	0
Total	489,000	611,000	147,000
Fair Value, Measurements, Recurring
Unrealized Losses on Securities in a Continuous Loss Position:
Equity Securities	2,070,000	2,174,000	1,877,000
Collateral Pledged
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value	146,902,000	142,982,000	176,635,000
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	3,699,000	3,898,000	4,954,000
US Government Agencies Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Fair Value	3,522,000	3,687,000	4,900,000
US Government-sponsored Enterprises Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	7,334,000	7,866,000	9,875,000
US Government-sponsored Enterprises Debt Securities | Fair Value, Measurements, Recurring | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Fair Value	$ 7,022,000	$ 7,466,000	$ 9,782,000