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Investment Securities - Total investment securities (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Contractual maturities of securities
Available for Sale, Cost Basis, Within 1 year	$ 3,502
Available for Sale, Cost Basis, After 1 year but within 5 years	22,384
Available for Sale, Cost Basis, After 5 years but within 10 years	46,234
Available for Sale, Cost Basis, After 10 years but within 15 years	20,122
Available for Sale, Cost Basis, Over 15 years	46,814
Available for Sale, Cost Basis, Total	139,056	$ 139,577
Available for Sale, Fair Value, Within 1 year	3,511
Available for Sale, Fair Value, After 1 year but within 5 years	22,576
Available for Sale, Fair Value, After 5 years but within 10 years	47,401
Available for Sale, Fair Value, After 10 years but within 15 years	21,076
Available for Sale, Fair Value, Over 15 years	48,795
Available for Sale, Fair Value, Total	143,359	141,749
Held to Maturity, Cost Basis, Within 1 year	400
Held to Maturity, Cost Basis, After 1 year but within 5 years	7,968
Held to Maturity, Cost Basis, After 5 years but within 10 years	19,486
Held to Maturity, Cost Basis, After 10 years but within 15 years	7,493
Held to Maturity, Cost Basis, Over 15 years	6,202
Held to Maturity, Cost Basis, Total	41,549	39,936
Held to Maturity, Fair Value, Within 1 year	405
Held to Maturity, Fair Value, After 1 year but within 5 years	8,227
Held to Maturity, Fair Value, After 5 years but within 10 years	20,957
Held to Maturity, Fair Value, After 10 years but within 15 years	7,962
Held to Maturity, Fair Value, Over 15 years	6,438
Held to Maturity, Fair Value, Total	$ 43,989	$ 41,082

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-Topic 320
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121645371&loc=SL120269820-111563

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