Available for Sale Securities (Contractual Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Due in one year or less, amortized cost	$ 1,020
Due in one year or less, fair value	1,019
Due after one year through 5 years, amortized cost	2,708
Due after one year through 5 years, fair value	2,731
Due after 5 years through 10 years, amortized cost	4,525
Due after 5 years through 10 years, fair value	4,660
Due after 10 years, amortized cost	6,121
Due after 10 years, fair value	6,179
Subtotal, amortized cost	14,374
Subtotal, fair value	14,589
Amortized cost	53,596	$ 47,709
Estimated fair value	55,063	48,179
Collateralized Mortgage Backed Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized cost	39,222	35,095
Estimated fair value	$ 40,474	$ 35,482

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118939692&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=118942338&loc=SL82898722-210454

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