Securities Available-for-sale - Available for Sale Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Amortized Cost
Total	$ 125,053	$ 99,089
Fair Value
Total	126,057	97,205
U.S. agency securities
Amortized Cost
Due after one year through five years	996	1,043
Due after five years through ten years	3,997	10,011
Due after ten years	3,993	4,998
Subtotal	8,986	16,052
Total	8,986	16,052
Fair Value
Due after one year through five years	1,036	1,040
Due after five years through ten years	4,027	9,941
Due after ten years	4,003	4,906
Subtotal	9,066	15,887
Total	9,066	15,887
Corporate securities
Amortized Cost
Due in one year or less	5,034
Due after one year through five years	3,491	6,077
Due after five years through ten years	2,000	997
Subtotal	10,525	7,074
Total	10,525	7,074
Fair Value
Due in one year or less	5,044
Due after one year through five years	3,532	5,947
Due after five years through ten years	1,994	918
Subtotal	10,570	6,865
Total	10,570	6,865
Municipal bonds
Amortized Cost
Due after one year through five years	3,774	2,659
Due after five years through ten years	3,162	2,610
Due after ten years	13,580	9,177
Subtotal	20,516	14,446
Total	20,516	14,446
Fair Value
Due after one year through five years	3,833	2,570
Due after five years through ten years	3,307	2,592
Due after ten years	13,980	9,032
Subtotal	21,120	14,194
Total	21,120	14,194
Mortgage-backed securities
Amortized Cost
Mortgage-backed securities	62,745	45,827
Total	62,745	45,827
Fair Value
Mortgage-backed securities	62,850	44,836
Total	62,850	44,836
Federal National Mortgage Association ("FNMA")
Amortized Cost
Mortgage-backed securities	42,131	30,554
Fair Value
Mortgage-backed securities	42,333	30,026
Federal Home Loan Mortgage Corporation ("FHLMC")
Amortized Cost
Mortgage-backed securities	15,250	10,301
Fair Value
Mortgage-backed securities	15,179	9,961
Government National Mortgage Association ("GNMA")
Amortized Cost
Mortgage-backed securities	5,364	4,972
Fair Value
Mortgage-backed securities	5,338	4,849
U.S. Small Business Administration securities
Amortized Cost
Due after one year through five years	1,546
Due after five years through ten years	11,500	13,828
Due after ten years	9,235	1,862
Subtotal	22,281	15,690
Total	22,281	15,690
Fair Value
Due after one year through five years	1,555
Due after five years through ten years	11,598	13,581
Due after ten years	9,298	1,842
Subtotal	22,451	15,423
Total	$ 22,451	$ 15,423