Fair Value of Assets and Liabilities - Assets and Liabilities Measured on Recurring Basis (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	$ 482,453,000	$ 215,634,000
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount	0
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount	0
Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	482,453,000	215,634,000
Interest rate swaps agreements for customer loans	1,326,000
Derivative financial instruments and interest rate swap agreements	4,893,000	6,174,000
US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	137,758,000
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	21,801,000	30,530,000
Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	67,820,000	91,989,000
Other Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	27,220,000	25,118,000
Mortgage-backed securities (GSEs) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	227,854,000	67,997,000
Fair Value, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	482,453,000	215,634,000
Total assets at fair value	483,779,000
Derivative financial instruments and interest rate swap agreements	4,893,000	6,174,000
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	482,453,000	215,634,000
Total assets at fair value	483,779,000
Derivative financial instruments and interest rate swap agreements	4,893,000	6,174,000
Fair Value, Recurring [Member] \| US Treasury Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	137,758,000
Fair Value, Recurring [Member] \| US Treasury Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	137,758,000
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	21,801,000	30,530,000
Fair Value, Recurring [Member] \| US Government-sponsored Enterprises Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	21,801,000	30,530,000
Fair Value, Recurring [Member] \| Municipal securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	67,820,000	91,989,000
Fair Value, Recurring [Member] \| Municipal securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	67,820,000	91,989,000
Fair Value, Recurring [Member] \| Other Debt Securities [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	27,220,000	25,118,000
Fair Value, Recurring [Member] \| Other Debt Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	27,220,000	25,118,000
Fair Value, Recurring [Member] \| Mortgage-backed securities (GSEs) [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	227,854,000	67,997,000
Fair Value, Recurring [Member] \| Mortgage-backed securities (GSEs) [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt securities available-for-sale, at fair value	227,854,000	$ 67,997,000
Fair Value, Recurring [Member] \| Interest Rate Swap [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps agreements for customer loans	1,326,000
Fair Value, Recurring [Member] \| Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps agreements for customer loans	$ 1,326,000

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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