Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale, with Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Securities Available for Sale [Abstract]
Amortized cost	$ 80,235	$ 78,144
Gross unrealized gains	4,441	1,739
Gross unrealized (losses)	(86)	(100)
Fair value	84,590	79,783
Obligations of U.S. Government Corporations and Agencies [Member]
Securities Available for Sale [Abstract]
Amortized cost	60,791	63,090
Gross unrealized gains	3,040	937
Gross unrealized (losses)	(16)	(86)
Fair value	63,815	63,941
Obligations of States and Political Subdivisions [Member]
Securities Available for Sale [Abstract]
Amortized cost	19,444	15,054
Gross unrealized gains	1,401	802
Gross unrealized (losses)	(70)	(14)
Fair value	$ 20,775	$ 15,842

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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

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

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