Borrowings, Line of Credit and Subordinated Debt - Additional Information (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
	Sep. 01, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Sep. 28, 2018
Debt Instrument [Line Items]
Borrowings		$ 12,500		$ 12,500		$ 87,600
Other borrowings		7,500		7,500		7,500
Securities sold under agreements to repurchase		5,049		5,049		5,085
Repayment borrowings				75,000	$ 396
Securities sold under agreements to repurchase, average balance		5,100	$ 5,800	5,100	5,800
Securities sold under agreements to repurchase, maximum month-end balance		5,500	7,200	5,500	7,200
Amortization expense of debt issuance costs				42	$ 42
Securities available-for-sale, at fair value		524,864		524,864		482,453
US Government-sponsored Enterprises Debt Securities [Member]
Debt Instrument [Line Items]
Securities available-for-sale, at fair value		423		423		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		9,500		9,500		10,100
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity		25,000		25,000
Outstanding borrowings		7,500		7,500
Remaining borrowing capacity		17,500		17,500
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		527		$ 527		$ 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%