Investment Securities - Held to Maturity (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) security	Dec. 31, 2021 USD ($) security	Mar. 31, 2021 USD ($) security
Schedule of Held-to-maturity Securities [Line Items]
Debt securities, available-for-sale, allowance for credit loss	$ 0
Held-To-Maturity Securities, at Amortized Cost	196,661,000	$ 196,566,000	$ 214,561,000
Gross Unrealized Gains	180,000	4,726,000	6,799,000
Gross Unrealized Losses	(979,000)	0	0
Held-To-Maturity Securities, at Fair Value	195,862,000	201,292,000	221,360,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	69,539,000
From 1 - 5 Years	124,215,000
From 5 - 10 Years	2,866,000
Over 10 Years	41,000
Maturities of Debt Securities, at Fair Value:
Within One Year	69,536,000
From 1 - 5 Years	123,407,000
From 5 - 10 Years	2,878,000
Over 10 Years	41,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	110,553,000	0	0
12 Months or Longer	0	0	0
Total	$ 110,553,000	$ 0	$ 0
Number of Securities in a Continuous Loss Position | security	281	0	0
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 979,000	$ 0	$ 0
12 Months or Longer	0	0	0
Total	979,000	0	0
Debt securities, available-for-sale, 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	0
Equity Securities	1,877,000	1,747,000	1,796,000
State and Municipal Obligations
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	181,832,000	180,195,000	191,202,000
Gross Unrealized Gains	180,000	4,179,000	5,843,000
Gross Unrealized Losses	(832,000)	0	0
Held-To-Maturity Securities, at Fair Value	181,180,000	184,374,000	197,045,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	69,318,000
From 1 - 5 Years	109,607,000
From 5 - 10 Years	2,866,000
Over 10 Years	41,000
Maturities of Debt Securities, at Fair Value:
Within One Year	69,315,000
From 1 - 5 Years	108,946,000
From 5 - 10 Years	2,878,000
Over 10 Years	41,000
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	96,088,000	0	0
12 Months or Longer	0	0	0
Total	$ 96,088,000	$ 0	$ 0
Number of Securities in a Continuous Loss Position | security	258	0	0
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 832,000	$ 0	$ 0
12 Months or Longer	0	0	0
Total	832,000	0	0
Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	14,829,000	16,371,000	23,359,000
Gross Unrealized Gains	0	547,000	956,000
Gross Unrealized Losses	(147,000)	0	0
Held-To-Maturity Securities, at Fair Value	14,682,000	16,918,000	24,315,000
Maturities of Debt Securities, at Amortized Cost:
Within One Year	221,000
From 1 - 5 Years	14,608,000
From 5 - 10 Years	0
Over 10 Years	0
Maturities of Debt Securities, at Fair Value:
Within One Year	221,000
From 1 - 5 Years	14,461,000
From 5 - 10 Years	0
Over 10 Years	0
Securities in a Continuous Loss Position, at Fair Value:
Less than 12 Months	14,465,000	0	0
12 Months or Longer	0	0	0
Total	$ 14,465,000	$ 0	$ 0
Number of Securities in a Continuous Loss Position | security	23	0	0
Unrealized Losses on Securities in a Continuous Loss Position:
Less than 12 Months	$ 147,000	$ 0	$ 0
12 Months or Longer	0	0	0
Total	147,000	0	0
Fair Value, Measurements, Recurring
Unrealized Losses on Securities in a Continuous Loss Position:
Equity Securities	1,877,000	1,747,000	1,796,000
Collateral Pledged
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, Pledged as Collateral, at Fair Value	176,635,000	175,218,000	207,595,000
US Government Agencies Debt Securities | Mortgage-Backed Securities - Residential
Schedule of Held-to-maturity Securities [Line Items]
Held-To-Maturity Securities, at Amortized Cost	4,954,000	5,518,000	8,310,000
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	4,900,000	5,647,000	8,597,000
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	9,875,000	10,853,000	15,049,000
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	$ 9,782,000	$ 11,271,000	$ 15,718,000