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Fair Value Measurements - Schedule of Carrying Amount, Fair Value and Placement in Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Financial assets:
Interest-bearing deposits in banks	$ 700,303	$ 375,613	$ 278,490
Equity securities with readily determinable fair values	2,547	2,170	1,880	$ 2,363
Investment securities available for sale	411,676	337,718	313,671
Investment securities held to maturity	7,482	10,768	14,110
Restricted investment in bank stocks	2,368	2,942	$ 3,022
Level 1
Financial assets:
Cash and due from banks	9,400	12,436
Interest-bearing deposits in banks	700,303	375,613
Equity securities with readily determinable fair values	2,547	2,170
Investment securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale	0	0
Loans, less allowance for loan losses	0	0
Accrued interest receivable	0	0
Restricted investment in bank stocks	0	0
Financial liabilities:
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Trust preferred subordinated debt	0	0
Accrued interest payable	0	0
Off-balance sheet financial instruments	0	0
Level 2
Financial assets:
Cash and due from banks	13,079	11,303
Interest-bearing deposits in banks	0	0
Equity securities with readily determinable fair values	0	0
Investment securities available for sale	411,676	337,718
Investment securities held to maturity	7,482	10,768
Loans held for sale	3,935	11,034
Loans, less allowance for loan losses	0	0
Accrued interest receivable	5,746	6,950
Restricted investment in bank stocks	2,368	2,942
Financial liabilities:
Demand deposits and savings	1,966,499	1,708,868
Time deposits	453,159	481,138
Short-term borrowings	44,605	38,464
Long-term borrowings	21,027	43,669
Trust preferred subordinated debt	20,132	9,902
Accrued interest payable	417	1,434
Off-balance sheet financial instruments	0	0
Level 3
Financial assets:
Cash and due from banks	0	0
Interest-bearing deposits in banks	0	0
Equity securities with readily determinable fair values	0	0
Investment securities available for sale	0	0
Investment securities held to maturity	0	0
Loans held for sale	0	0
Loans, less allowance for loan losses	1,490,133	1,662,342
Accrued interest receivable	0	0
Restricted investment in bank stocks	0	0
Financial liabilities:
Demand deposits and savings	0	0
Time deposits	0	0
Short-term borrowings	0	0
Long-term borrowings	0	0
Trust preferred subordinated debt	0	0
Accrued interest payable	0	0
Off-balance sheet financial instruments	0	0
Carrying Amount
Financial assets:
Cash and due from banks	22,479	23,739
Interest-bearing deposits in banks	700,303	375,613
Equity securities with readily determinable fair values	2,547	2,170
Investment securities available for sale	411,676	337,718
Investment securities held to maturity	7,220	10,294
Loans held for sale	3,935	11,034
Loans, less allowance for loan losses	1,467,745	1,617,558
Accrued interest receivable	5,746	6,950
Restricted investment in bank stocks	2,368	2,942
Financial liabilities:
Demand deposits and savings	1,966,499	1,708,868
Time deposits	451,062	476,657
Short-term borrowings	44,605	38,464
Long-term borrowings	20,700	42,745
Trust preferred subordinated debt	21,000	11,000
Accrued interest payable	417	1,434
Off-balance sheet financial instruments	0	0
Fair Value
Financial assets:
Cash and due from banks	22,479	23,739
Interest-bearing deposits in banks	700,303	375,613
Equity securities with readily determinable fair values	2,547	2,170
Investment securities available for sale	411,676	337,718
Investment securities held to maturity	7,482	10,768
Loans held for sale	3,935	11,034
Loans, less allowance for loan losses	1,490,133	1,662,342
Accrued interest receivable	5,746	6,950
Restricted investment in bank stocks	2,368	2,942
Financial liabilities:
Demand deposits and savings	1,966,499	1,708,868
Time deposits	453,159	481,138
Short-term borrowings	44,605	38,464
Long-term borrowings	21,027	43,669
Trust preferred subordinated debt	20,132	9,902
Accrued interest payable	417	1,434
Off-balance sheet financial instruments	$ 0	$ 0

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Amount 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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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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The face amount of financial liabilities, which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition.

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Fair value of subordinated debt obligations including, but not limited to, subordinated loan, subordinated bond, subordinated debenture or junior debt.

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Fair value of investment in debt security measured at amortized cost (held-to-maturity).

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For banks and other depository institutions (including Federal Reserve Banks, if applicable): Interest-bearing deposits in other financial institutions for relatively short periods of time including, for example, certificates of deposits, which are presented separately from cash on the balance sheet.

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