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Financial Derivative Instruments (Details)	3 Months Ended
	Mar. 31, 2022 USD ($) derivative	Dec. 31, 2021 USD ($) derivative	Mar. 31, 2021 USD ($) derivative
Interest rate swap agreements
Derivative [Line Items]
Derivative, gain on derivative	$ 336,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2021
Derivative [Line Items]
Fixed Rate Paid	0.94%
Notional Amount	$ 0	$ 0	$ 30,000,000
Fair Value	$ 0	0	(61,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 27 2021
Derivative [Line Items]
Fixed Rate Paid	0.893%
Notional Amount	$ 0	0	20,000,000
Fair Value	$ 0	0	(38,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 2 2024
Derivative [Line Items]
Fixed Rate Paid	1.59%
Notional Amount	$ 0	0	12,500,000
Fair Value	$ 0	0	(458,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap August 5 2024
Derivative [Line Items]
Fixed Rate Paid	1.42%
Notional Amount	$ 0	0	12,500,000
Fair Value	$ 0	0	(387,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2023
Derivative [Line Items]
Fixed Rate Paid	1.486%
Notional Amount	$ 0	0	25,000,000
Fair Value	$ 0	0	(580,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap February 12 2024
Derivative [Line Items]
Fixed Rate Paid	1.477%
Notional Amount	$ 0	0	25,000,000
Fair Value	$ 0	0	(735,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap June 28 2026
Derivative [Line Items]
Fixed Rate Paid	1.158%
Notional Amount	$ 0	0	50,000,000
Fair Value	$ 0	0	(352,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2025
Derivative [Line Items]
Fixed Rate Paid	0.855%
Notional Amount	$ 0	0	25,000,000
Fair Value	$ 0	0	(99,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap March 13 2030
Derivative [Line Items]
Fixed Rate Paid	1.029%
Notional Amount	$ 0	0	20,000,000
Fair Value	$ 0	0	1,071,000
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 07 2023
Derivative [Line Items]
Fixed Rate Paid	0.599%
Notional Amount	$ 0	0	20,000,000
Fair Value	$ 0	0	(129,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest Rate Swap April 07 2024
Derivative [Line Items]
Fixed Rate Paid	0.643%
Notional Amount	$ 0	0	20,000,000
Fair Value	0	0	(84,000)
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swap agreements
Derivative [Line Items]
Notional Amount	0	0	260,000,000
Fair Value	$ 0	0	(1,852,000)
Cash Flow Hedging | Designated as Hedging Instrument | Customer Loan Swaps Maturity Dates December 19, 2029 and October 1, 2039
Derivative [Line Items]
Number of derivative instruments | derivative	6
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements
Derivative [Line Items]
Fair Value	$ 0	$ 0	$ 0
Number of derivative instruments | derivative	12	12	12
Derivative notional amount	$ 78,348,000	$ 80,738,000	$ 83,712,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ 1,533,000	$ (1,013,000)	$ (62,000)
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 39,174,000	$ 40,369,000	$ 41,856,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ (1,533,000)	$ 1,013,000	$ 62,000
Number of derivative instruments | derivative	6	6	6
Derivative notional amount	$ 39,174,000	$ 40,369,000	$ 41,856,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Assets | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ 2,099,000	$ 789,000	$ 1,272,000
Number of derivative instruments | derivative	5	3	3
Derivative notional amount	$ 26,864,000	$ 15,765,000	$ 16,797,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Assets | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ 566,000	$ 1,802,000	$ 1,334,000
Number of derivative instruments | derivative	1	3	3
Derivative notional amount	$ 12,310,000	$ 24,604,000	$ 25,059,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Liabilities | Customer loan interest swap agreements | Pay Fixed, Receive Variable
Derivative [Line Items]
Fair Value	$ (566,000)	$ (1,802,000)	$ (1,334,000)
Number of derivative instruments | derivative	1	3	3
Derivative notional amount	$ 12,310,000	$ 24,604,000	$ 25,059,000
Cash Flow Hedging | Not Designated as Hedging Instrument | Other Liabilities | Customer loan interest swap agreements | Receive Fixed, Pay Variable
Derivative [Line Items]
Fair Value	$ (2,099,000)	$ (789,000)	$ (1,272,000)
Number of derivative instruments | derivative	5	3	3
Derivative notional amount	$ 26,864,000	$ 15,765,000	$ 16,797,000

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- Definition

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