Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair value of assets and liabilities
Investment securities available-for-sale	$ 329,137	$ 379,814
Equity securities	41,082	38,744
Bank-owned life insurance	43,746	43,239
Recurring
Fair value of assets and liabilities
Equity securities	4,837	5,382
Bank-owned life insurance	43,746	43,239
Recurring \| Level I
Fair value of assets and liabilities
Equity securities	4,837	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	43,746	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	38,474	44,814
United States government agency securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	38,474	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	38,474	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	54,366	56,571
United States sponsored mortgage-backed securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	54,366	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	54,366	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	98,029	120,909
United States treasury securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	98,029	120,909
United States treasury securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	98,029	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	121,066	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	86,648	103,293
Municipal securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	34,418	35,343
Corporate debt securities
Fair value of assets and liabilities
Investment securities available-for-sale	8,901	10,560
Corporate debt securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	8,901	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	8,901	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	801	824
Other securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	801	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	801	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	9,372	8,427
Derivative liability	8,429	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	9,372	8,427
Derivative liability	8,429	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	219
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	219
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.

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