Investment Securities - Contractual Maturities on Collateralized Mortgage Obligation (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Amortized Cost
Due in one year or less	$ 0
Due after one year through five years	0
Due after five years through ten years	4,059
Due after ten years	27,140
Collateralized mortgage obligations	46,876
Amortized Cost	78,075	$ 66,954
Fair Value (Carrying Amount)
Due in one year or less	0
Due after one year through five years	0
Due after five years through ten years	4,051
Due after ten years	27,115
Collateralized mortgage obligations	46,698
Fair Value (Carrying Amount)	$ 77,864	$ 66,426

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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