Securities - Schedule of Amortized Cost and Estimated Fair Value of Securities Available for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Schedule Of Available For Sale Securities [Line Items]
Within one year, Amortized Cost	$ 2,000
One to five years, Amortized Cost	1,000
Available for sale, Amortized Cost	50,618	$ 56,282
Within one year, Fair Value	2,010
One to five years, Fair Value	1,015
Available for sale, Fair Value	52,179	56,549
Mortgage-backed Securities, Residential
Schedule Of Available For Sale Securities [Line Items]
Available for sale, Amortized Cost	14,900	15,559
Available for sale, Fair Value	15,303	$ 15,641
Collateralized Mortgage Obligations
Schedule Of Available For Sale Securities [Line Items]
Available for sale, Amortized Cost	32,718
Available for sale, Fair Value	$ 33,851

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
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-Section 50
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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