Securities Held-to-Maturity - Age of unrealized losses and the fair value (Details) $ in Thousands	Sep. 30, 2022 USD ($) security item	Dec. 31, 2021 USD ($) security item
Fair Value
Less than 12 Months	$ 22,864	$ 13,080
12 Months or More	36
Total	22,900	13,080
Gross Unrealized Losses
Less than 12 Months	3,831	327
12 Months or More	1
Total	3,832	327
Government National Mortgage Association
Fair Value
Less than 12 Months	531
Total	531
Gross Unrealized Losses
Less than 12 Months	13
Total	13
Federal Home Loan Mortgage Corporation
Fair Value
Less than 12 Months	809	1,004
12 Months or More	36
Total	845	1,004
Gross Unrealized Losses
Less than 12 Months	139	5
12 Months or More	1
Total	140	5
Federal National Mortgage Association
Fair Value
Less than 12 Months	2,114	2,035
Total	2,114	2,035
Gross Unrealized Losses
Less than 12 Months	275	6
Total	275	6
Collateralized mortgage obligations - GSE
Fair Value
Less than 12 Months	2,603	907
Total	2,603	907
Gross Unrealized Losses
Less than 12 Months	480	49
Total	480	49
Mortgage-backed securities - residential
Fair Value
Less than 12 Months	6,057	3,946
12 Months or More	36
Total	6,093	3,946
Gross Unrealized Losses
Less than 12 Months	907	60
12 Months or More	1
Total	$ 908	$ 60
Mortgage-backed securities
Gross Unrealized Losses
Number of securities with unrealized loss | security	35	4
Municipal Bonds
Fair Value
Less than 12 Months	$ 6,922	$ 9,134
Total	6,922	9,134
Gross Unrealized Losses
Less than 12 Months	2,787	267
Total	$ 2,787	$ 267
Number of securities with unrealized loss | item	5	3
U.S Treasury securities
Fair Value
Less than 12 Months	$ 9,885
Total	9,885
Gross Unrealized Losses
Less than 12 Months	137
Total	$ 137
US Treasury Notes
Gross Unrealized Losses
Number of securities with unrealized loss | item	2