Investment Securities - Total investment securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	$ 3,491
Available for Sale, Cost Basis, After 1 year but within 5 years	23,276
Available for Sale, Cost Basis, After 5 years but within 10 years	39,693
Available for Sale, Cost Basis, After 10 years but within 15 years	21,766
Available for Sale, Cost Basis, Over 15 years	51,149
Available for Sale, Cost Basis, Total	139,375	$ 139,577
Available for Sale, Fair Value, Within 1 year	3,486
Available for Sale, Fair Value, After 1 year but within 5 years	23,068
Available for Sale, Fair Value, After 5 years but within 10 years	40,334
Available for Sale, Fair Value, After 10 years but within 15 years	22,749
Available for Sale, Fair Value, Over 15 years	53,079
Available for Sale, Fair Value, Total	142,716	141,749
Held to Maturity, Cost Basis, After 1 year but within 5 years	7,530
Held to Maturity, Cost Basis, After 5 years but within 10 years	20,094
Held to Maturity, Cost Basis, After 10 years but within 15 years	7,707
Held to Maturity, Cost Basis, Over 15 years	6,737
Held to Maturity, Cost Basis, Total	42,068	39,936
Held to Maturity, Fair Value, After 1 year but within 5 years	7,732
Held to Maturity, Fair Value, After 5 years but within 10 years	21,386
Held to Maturity, Fair Value, After 10 years but within 15 years	8,116
Held to Maturity, Fair Value, Over 15 years	7,002
Held to Maturity, Fair Value, Total	$ 44,236	$ 41,082

Available For Sale And Held For Maturity Securities Debt Maturities Amortized Cost

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