Estimated annual amortization expense of core deposit intangibles (Details) - USD ($) $ in Thousands	12 Months Ended								60 Months Ended
	Dec. 31, 2027	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2027
Finite-Lived Intangible Assets [Line Items]
Other Depreciation and Amortization						$ 191	$ 256	$ 321
Core Deposits [Member]
Finite-Lived Intangible Assets [Line Items]
Other Depreciation and Amortization	$ 1	$ 12	$ 25	$ 61	$ 128				$ 227