Investment securities available for sale - Schedule of investment securities available for sale (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Schedule of Available-for-sale Securities [Line Items]
Securities in a loss position for less than 12 Months, Fair Value	$ 2,679	$ 8,776
Securities in a loss position for less than 12 Months, Unrealized Losses	(7)	(611)
Securities in a loss position for more than 12 Months, Fair Value	41,320	58,193
Securities in a loss Position for more than 12 Months, Unrealized Losses	(6,235)	(7,155)
Total fair value	43,999	66,969
Total Unrealized Losses	(6,242)	(7,766)
U.S. Government agencies obligations
Schedule of Available-for-sale Securities [Line Items]
Securities in a loss position for more than 12 Months, Fair Value	328	20,289
Securities in a loss Position for more than 12 Months, Unrealized Losses	(6)	(75)
Total fair value	328	20,289
Total Unrealized Losses	(6)	(75)
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Securities in a loss position for less than 12 Months, Fair Value	2,679	4,631
Securities in a loss position for less than 12 Months, Unrealized Losses	(7)	(24)
Securities in a loss position for more than 12 Months, Fair Value	29,596	30,311
Securities in a loss Position for more than 12 Months, Unrealized Losses	(4,329)	(5,357)
Total fair value	32,275	34,942
Total Unrealized Losses	(4,336)	(5,381)
Municipals
Schedule of Available-for-sale Securities [Line Items]
Securities in a loss position for more than 12 Months, Fair Value	1,760	1,656
Securities in a loss Position for more than 12 Months, Unrealized Losses	(502)	(608)
Total fair value	1,760	1,656
Total Unrealized Losses	(502)	(608)
Subordinated debt
Schedule of Available-for-sale Securities [Line Items]
Securities in a loss position for less than 12 Months, Fair Value		4,145
Securities in a loss position for less than 12 Months, Unrealized Losses		(587)
Securities in a loss position for more than 12 Months, Fair Value	9,636	5,937
Securities in a loss Position for more than 12 Months, Unrealized Losses	(1,398)	(1,115)
Total fair value	9,636	10,082
Total Unrealized Losses	$ (1,398)	$ (1,702)