Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair value of assets and liabilities
Investment securities available-for-sale	$ 395,301	$ 421,466
Equity securities	34,447	32,402
Recurring
Fair value of assets and liabilities
Equity securities	247	247
Recurring \| Level I
Fair value of assets and liabilities
Equity securities	247	247
Recurring \| Level II
Fair value of assets and liabilities
Equity securities	0	0
Recurring \| Level III
Fair value of assets and liabilities
Equity securities	0	0
United States government agency securities
Fair value of assets and liabilities
Investment securities available-for-sale	52,451	40,437
United States government agency securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	52,451	40,437
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	52,451	40,437
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	68,481	76,108
United States sponsored mortgage-backed securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	68,481	76,108
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	68,481	76,108
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	105,842	110,389
United States treasury securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	105,842
United States treasury securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	0
United States treasury securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	105,842
United States treasury securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	0
Municipal securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	151,343	175,012
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	111,675	133,249
Municipal securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	39,668	41,763
Other securities
Fair value of assets and liabilities
Investment securities available-for-sale	868	878
Other securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	868	878
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	868	878
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	3,492	6,702
Derivative liability	3,492	6,702
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	3,492	6,702
Derivative liability	3,492	6,702
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	873	1,552
Derivative liability	148	807
Fair value hedge \| Recurring \| Level I
Fair value of assets and liabilities
Derivative asset	0	0
Derivative liability	0	0
Fair value hedge \| Recurring \| Level II
Fair value of assets and liabilities
Derivative asset	873	1,552
Derivative liability	148	807
Fair value hedge \| Recurring \| Level III
Fair value of assets and liabilities
Derivative asset	0	0
Derivative liability	$ 0	$ 0

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).

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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