Fair Value Measurements - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Fair value of assets and liabilities
Investment securities available-for-sale	$ 450,772	$ 410,624
Equity securities	32,215	27,585
Recurring
Fair value of assets and liabilities
Equity securities	447	472
Loans held-for-sale		1,062
Recurring \| Level I
Fair value of assets and liabilities
Equity securities	447	472
Loans held-for-sale		0
Recurring \| Level II
Fair value of assets and liabilities
Equity securities	0	0
Loans held-for-sale		1,062
Recurring \| Level III
Fair value of assets and liabilities
Equity securities	0	0
Loans held-for-sale		0
United States government agency securities
Fair value of assets and liabilities
Investment securities available-for-sale	43,202	56,992
United States government agency securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	43,202	56,992
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	43,202	56,992
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	86,236	95,769
United States sponsored mortgage-backed securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	86,236	95,769
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	86,236	95,769
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	106,656
United States treasury securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	106,656
United States treasury securities \| Recurring \| Level I
Fair value of assets and liabilities
Investment securities available-for-sale	106,656
United States treasury securities \| Recurring \| Level II
Fair value of assets and liabilities
Investment securities available-for-sale	0
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	196,249	231,887
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	156,479	188,208
Municipal securities \| Recurring \| Level III
Fair value of assets and liabilities
Investment securities available-for-sale	39,770	43,679
Other securities
Fair value of assets and liabilities
Investment securities available-for-sale	10,929	18,476
Other securities \| Recurring
Fair value of assets and liabilities
Investment securities available-for-sale	10,929	18,476
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	10,929	18,476
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	9,447	13,822
Derivative liability	9,447	13,822
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	9,447	13,822
Derivative liability	9,447	13,822
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	1,942	2,215
Derivative liability	1,384	2,141
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	1,942	2,215
Derivative liability	1,384	2,141
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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Fair value portion of loans held-for-sale including, but not limited to, mortgage loans and finance receivables.

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