Derivatives and hedging activities - Effect of Other Derivative Instruments on the Income Statement (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments, Gain (Loss)
Amount of Gain Recognized in Income	$ 521	$ 136
Derivatives not designated as hedging instruments | Interest Rate Swaps | Interest Rate Swap Revenue
Derivative Instruments, Gain (Loss)
Amount of Gain Recognized in Income	516	136
Derivatives not designated as hedging instruments | Other
Derivative Instruments, Gain (Loss)
Amount of Gain Recognized in Income	5
Derivatives not designated as hedging instruments | Fee Income
Derivative Instruments, Gain (Loss)
Amount of Gain Recognized in Income	$ 106	$ 623