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Borrowings, Line of Credit and Subordinated Debt - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Sep. 01, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Sep. 28, 2018
Debt Instrument [Line Items]
Borrowings		$ 18,400		$ 18,400		$ 87,600
Other borrowings		12,500		12,500		7,500
Securities sold under agreements to repurchase		5,923		5,923		5,085
Repayment borrowings				75,000	$ 396
Securities sold under agreements to repurchase, average balance		5,200	$ 5,400	5,200	5,400
Securities sold under agreements to repurchase, maximum month-end balance		5,900	7,200	5,900	7,200
Amortization expense of debt issuance costs				63	$ 63
Securities available-for-sale, at fair value		519,723		519,723		482,453
Loan and Security Agreement and Revolving Line of Credit [Member]
Debt Instrument [Line Items]
Principal amount		25,000		25,000
US Government-sponsored Enterprises Debt Securities [Member]
Debt Instrument [Line Items]
Securities available-for-sale, at fair value		1,633		1,633		21,801
US Government-sponsored Enterprises Debt Securities [Member] | Asset Pledged as Collateral [Member]
Debt Instrument [Line Items]
Securities available-for-sale, at fair value		9,300		9,300		10,100
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Outstanding borrowings		12,500		12,500
Remaining borrowing capacity		12,500		12,500
Federal Home Loan Bank Advances [Member]
Debt Instrument [Line Items]
Repayment borrowings				75,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Principal amount							$ 40,000
Interest rate							5.625%
Debt issuance costs		506		$ 506		$ 570
Amortization expense of debt issuance costs		$ 21	$ 21
Subordinated Debt [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)				2.55%
Subordinated Debt [Member] | Sevier County Bancshares Inc [Member]
Debt Instrument [Line Items]
Interest rate	6.75%
Subordinated Debt [Member] | Sevier County Bancshares Inc [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	5.3025%

X

- Definition

Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price, average balance. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount, after the effects of master netting arrangements, of funds outstanding borrowed in the form of a security repurchase agreement between the entity and another party for the sale and repurchase of identical or substantially the same securities at a date certain for a specified price, maximum month end balance. Includes liabilities not subject to a master netting arrangement and not elected to be offset.

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Amount of amortization expense attributable to debt issuance costs.

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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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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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The carrying amount as of the balance sheet date for the aggregate of other miscellaneous borrowings owed by the reporting entity.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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