Income Taxes - Schedule of deferred tax assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred tax assets
Allowance for credit losses	$ 15,618	$ 13,854
Liability for unfunded commitments	3,153	2,196
Interest on nonperforming loans	66	98
Accrued expenses	1,341	1,227
Write-down of foreclosed assets		35
Write-down of fixed assets	67	62
Unrealized loss on available-for-sale securities	15,407
Unrealized loss on active cash flow derivatives	7,695
Income recognized for tax in excess of book related to terminated cash flow derivatives	5,530	6,978
Deferred income	290	298
Difference in basis for acquired assets and liabilities	686	893
Deferred Tax Assets, Gross, Total	49,853	25,641
Deferred tax liabilities
Tax depreciation in excess of book depreciation	(8,210)	(5,681)
FHLB stock dividends	(337)	(313)
Partnership tax credits	(668)	(251)
Prepaid expenses	(1,196)	(883)
Unrealized gain on securities transferred to held-to-maturity securities	(29)
Unrealized gain on available-for-sale securities		(2,698)
Unrealized gain on terminated cash flow derivatives	(5,530)	(6,978)
Other	(235)	(328)
Deferred tax liabilities, gross, total	(16,205)	(17,132)
Net deferred tax asset	$ 33,648	$ 8,509