Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Fair value of assets and liabilities
Investment securities available-for-sale	$ 339,578	$ 379,814
Equity securities	38,576	38,744
Bank-owned life insurance	43,499	43,239
Recurring
Fair value of assets and liabilities
Equity securities	5,588	5,382
Bank-owned life insurance	43,499	43,239
Recurring \| Level I
Fair value of assets and liabilities
Equity securities	5,588	5,382
Bank-owned life insurance	0	0
Recurring \| Level II
Fair value of assets and liabilities
Equity securities	0	0
Bank-owned life insurance	43,499	43,239
Recurring \| Level III
Fair value of assets and liabilities
Equity securities	0	0
Bank-owned life insurance	0	0
United States government agency securities
Fair value of assets and liabilities
Investment securities available-for-sale	39,988	44,814
United States government agency securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	39,988	44,814
United States government agency securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
United States government agency securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	39,988	44,814
United States government agency securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
United States sponsored mortgage-backed securities
Fair value of assets and liabilities
Investment securities available-for-sale	56,773	56,571
United States sponsored mortgage-backed securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	56,773	56,571
United States sponsored mortgage-backed securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
United States sponsored mortgage-backed securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	56,773	56,571
United States sponsored mortgage-backed securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
United States treasury securities
Fair value of assets and liabilities
Investment securities available-for-sale	99,354	120,909
United States treasury securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	99,354	120,909
United States treasury securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	99,354	0
United States treasury securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	0	120,909
United States treasury securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Municipal securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	123,602	138,636
Municipal securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Municipal securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	87,144	103,293
Municipal securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	36,458	35,343
Corporate debt securities
Fair value of assets and liabilities
Investment securities available-for-sale	11,548	10,560
Corporate debt securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	11,548	10,560
Corporate debt securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Corporate debt securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	11,548	10,560
Corporate debt securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Other securities
Fair value of assets and liabilities
Investment securities available-for-sale	813	824
Other securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	813	824
Other securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Other securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	813	824
Other securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0	0
Interest rate swap \| Recurring
Fair value of assets and liabilities
Derivative asset	6,371	8,427
Derivative liability	6,371	8,427
Interest rate swap \| Recurring \| Level I
Fair value of assets and liabilities
Derivative asset	0	0
Derivative liability	0	0
Interest rate swap \| Recurring \| Level II
Fair value of assets and liabilities
Derivative asset	6,371	8,427
Derivative liability	6,371	8,427
Interest rate swap \| Recurring \| Level III
Fair value of assets and liabilities
Derivative asset	0	0
Derivative liability	0	0
Fair value hedge \| Recurring
Fair value of assets and liabilities
Derivative asset	226
Derivative liability		572
Fair value hedge \| Recurring \| Level I
Fair value of assets and liabilities
Derivative asset	0
Derivative liability		0
Fair value hedge \| Recurring \| Level II
Fair value of assets and liabilities
Derivative asset	226
Derivative liability		572
Fair value hedge \| Recurring \| Level III
Fair value of assets and liabilities
Derivative asset	0
Derivative liability		0
Embedded derivative \| Recurring
Fair value of assets and liabilities
Derivative asset	648	787
Embedded derivative \| Recurring \| Level I
Fair value of assets and liabilities
Derivative asset	0	0
Embedded derivative \| Recurring \| Level II
Fair value of assets and liabilities
Derivative asset	0	0
Embedded derivative \| Recurring \| Level III
Fair value of assets and liabilities
Derivative asset	$ 648	$ 787

The carrying amount of a life insurance policy on an officer, executive or employee for which the reporting entity (a bank) is entitled to proceeds from the policy upon death of the insured or surrender of the insurance policy.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(10))
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Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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