Securities - Summary of Amortized Cost and Fair Value of Securities Available for Sale, with Unrealized Gains and Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Securities Available for Sale [Abstract]
Amortized cost	$ 70,762	$ 72,958
Gross unrealized gains	1,851	334
Gross unrealized (losses)	(56)	(1,408)
Fair value	72,557	71,884
Obligations of U.S. Government Corporations and Agencies [Member]
Securities Available for Sale [Abstract]
Amortized cost	57,305	57,673
Gross unrealized gains	997	26
Gross unrealized (losses)	(55)	(1,290)
Fair value	58,247	56,409
Obligations of States and Political Subdivisions [Member]
Securities Available for Sale [Abstract]
Amortized cost	13,457	14,605
Gross unrealized gains	854	93
Gross unrealized (losses)	(1)	(118)
Fair value	14,310	14,580
Corporate Bonds [Member]
Securities Available for Sale [Abstract]
Amortized cost	$ 680	680
Gross unrealized gains		215
Gross unrealized (losses)		0
Fair value		$ 895

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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