Securities - Narrative (Details)	9 Months Ended
	Sep. 30, 2024 USD ($) security	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 1,524,302,000		$ 1,372,575,000
Fair value	1,436,431,000		1,248,439,000
Realized tax expense (benefit) gain (loss)	(128,700)	$ 23,500
Allowance for credit loss on available for sale debt securities	$ 0		0
Securities unrealized loss | security	383
Restricted stock, at cost	$ 16,832,000		5,964,000
Asset Pledged as Collateral
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	1,200,000,000		826,500,000
Fair value	1,100,000,000		742,500,000
Federal Home Loan Bank (FHLB)
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Restricted stock, at cost	16,800,000		5,900,000
Community Bankers' Bank
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Restricted stock, at cost	111,000		50,000
U.S. Treasuries and government agencies
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	166,000,000		197,026,000
Fair value	$ 152,617,000		179,071,000
Securities in unrealized loss positions | security	11
Residential mortgage backed - agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 57,563,000		47,074,000
Fair value	$ 54,766,000		42,238,000
Securities in unrealized loss positions | security	14
Commercial mortgage backed - agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities in unrealized loss positions | security	14
State and Municipal Securities
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Securities in unrealized loss positions | security	212
Residential mortgage backed - non-agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 285,808,000		284,826,000
Fair value	$ 277,476,000		266,031,000
Securities in unrealized loss positions | security	69
Commercial mortgage backed - non-agency
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 157,569,000		183,454,000
Fair value	$ 153,694,000		177,061,000
Securities in unrealized loss positions | security	30
Asset-backed
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 71,073,000		79,315,000
Fair value	$ 70,635,000		77,936,000
Securities in unrealized loss positions | security	21
Other
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Amortized cost	$ 38,401,000		9,500,000
Fair value	$ 37,547,000		$ 8,014,000
Securities in unrealized loss positions | security	12