Fair value - Recurring and non recurring basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	$ 5,100	$ 5,100
Reported Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans held for sale	5,076	5,141
IRLC	111	471
Forward sales commitment	113	651
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US Government Agencies	60,577	40,999
Mortgage-backed securities	62,006	40,495
Municipals	1,545	2,209
Subordinated debt	8,875	9,246
Loans held for sale	5,076	5,141
IRLC	111	471
Forward sales commitment	113	651
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Subordinated debt	1,500	1,750
Fair Value, Measurements, Recurring [Member] | Reported Value Measurement [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
US Government Agencies	60,577	40,999
Mortgage-backed securities	62,006	40,495
Municipals	1,545	2,209
Subordinated debt	10,375	10,996
Loans held for sale	5,076	5,141
IRLC	111	471
Forward sales commitment	$ 113	$ 651