Investment Securities - Held to Maturity (Details)	3 Months Ended
	Jun. 30, 2023 USD ($) security	Dec. 31, 2022 USD ($) security	Jun. 30, 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	143,460,000	$ 175,364,000	$ 182,096,000
Gross Unrealized Gains	0	1,000	56,000
Gross Unrealized Losses	(4,317,000)	(3,742,000)	(1,641,000)
Held-To-Maturity Securities, at Fair Value	139,143,000	171,623,000	180,511,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	58,665,000
From 1 - 5 Years	82,456,000
From 5 - 10 Years	2,309,000
Over 10 Years	30,000
Maturities of Debt Securities, at Fair Value:
Within One Year	57,955,000
From 1 - 5 Years	78,881,000
From 5 - 10 Years	2,277,000
Over 10 Years	30,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	19,210,000	148,926,000	129,380,000
12 Months or Longer	103,847,000	0	0
Total	$ 123,057,000	$ 148,926,000	$ 129,380,000
Number of Securities in a Continuous Loss Position | security	359	413	344,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 292,000	$ 3,742,000	$ 1,641,000
12 Months or Longer	4,025,000	0	0
Total	4,317,000	3,742,000	1,641,000
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	1,889,000	2,174,000	2,031,000
State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	133,176,000	163,600,000	168,599,000
Gross Unrealized Gains	0	1,000	56,000
Gross Unrealized Losses	(3,717,000)	(3,131,000)	(1,449,000)
Held-To-Maturity Securities, at Fair Value	129,459,000	160,470,000	167,206,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	58,665,000
From 1 - 5 Years	72,172,000
From 5 - 10 Years	2,309,000
Over 10 Years	30,000
Maturities of Debt Securities, at Fair Value:
Within One Year	57,955,000
From 1 - 5 Years	69,197,000
From 5 - 10 Years	2,277,000
Over 10 Years	30,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	19,210,000	137,773,000	116,075,000
12 Months or Longer	94,163,000	0	0
Total	$ 113,373,000	$ 137,773,000	$ 116,075,000
Number of Securities in a Continuous Loss Position | security	343	397	327,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 292,000	$ 3,131,000	$ 1,449,000
12 Months or Longer	3,425,000	0	0
Total	3,717,000	3,131,000	1,449,000
Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	10,284,000	11,764,000	13,497,000
Gross Unrealized Gains	0	0	0
Gross Unrealized Losses	(600,000)	(611,000)	(192,000)
Held-To-Maturity Securities, at Fair Value	9,684,000	11,153,000	13,305,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	0
From 1 - 5 Years	10,284,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	0
From 1 - 5 Years	9,684,000
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	13,305,000
12 Months or Longer	9,684,000	0	0
Total	$ 9,684,000	$ 11,153,000	$ 13,305,000
Number of Securities in a Continuous Loss Position | security	16	16	17,000
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 0	$ 611,000	$ 192,000
12 Months or Longer	600,000	0	0
Total	600,000	611,000	192,000
Fair Value, Measurements, Recurring
Unrealized Losses on Securities in a Continuous Loss Position:
Equity Securities	1,889,000	2,174,000	2,031,000
Collateral Pledged
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value	115,674,000	142,982,000	153,020,000
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	3,516,000	3,898,000	4,401,000
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	3,295,000	3,687,000	4,328,000
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	6,768,000	7,866,000	9,096,000
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	$ 6,389,000	$ 7,466,000	$ 8,977,000