Securities - Amortized Cost and Fair Value of Available-for-sale Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 170,773	$ 204,217
Gross Unrealized Gains	1,193	441
Gross Unrealized Losses	(459)	(2,970)
Fair Value	171,507	201,688
U.S. Government-sponsored enterprises (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	19,023	44,117
Gross Unrealized Gains	42	12
Gross Unrealized Losses	(47)	(626)
Fair Value	19,018	43,503
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	59,272	55,248
Gross Unrealized Gains	816	276
Gross Unrealized Losses	(7)	(363)
Fair Value	60,081	55,161
Other debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,480	977
Gross Unrealized Gains	12	0
Gross Unrealized Losses	(47)	(67)
Fair Value	3,445	910
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	88,998	103,875
Gross Unrealized Gains	323	153
Gross Unrealized Losses	(358)	(1,914)
Fair Value	$ 88,963	$ 102,114

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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