Securities - Available-for-sale Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	$ 15,701	$ 41,734
Available-for-sale, gross unrealized losses, less than 12 months	(107)	(542)
Available-for-sale, fair value, 12 months or greater	33,406	89,289
Available-for-sale, gross unrealized losses, 12 months or greater	(352)	(2,428)
Securities available for sale	49,107	131,023
Available-for-sale, gross unrealized losses, total	(459)	(2,970)
U.S. Government-sponsored enterprises (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	2,999	14,763
Available-for-sale, gross unrealized losses, less than 12 months	(24)	(237)
Available-for-sale, fair value, 12 months or greater	5,977	13,728
Available-for-sale, gross unrealized losses, 12 months or greater	(23)	(389)
Securities available for sale	8,976	28,491
Available-for-sale, gross unrealized losses, total	(47)	(626)
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	970	16,455
Available-for-sale, gross unrealized losses, less than 12 months	(3)	(150)
Available-for-sale, fair value, 12 months or greater	527	4,767
Available-for-sale, gross unrealized losses, 12 months or greater	(4)	(213)
Securities available for sale	1,497	21,222
Available-for-sale, gross unrealized losses, total	(7)	(363)
Other debt securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	0	0
Available-for-sale, gross unrealized losses, less than 12 months	0	0
Available-for-sale, fair value, 12 months or greater	933	910
Available-for-sale, gross unrealized losses, 12 months or greater	(47)	(67)
Securities available for sale	933	910
Available-for-sale, gross unrealized losses, total	(47)	(67)
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	11,732	10,516
Available-for-sale, gross unrealized losses, less than 12 months	(80)	(155)
Available-for-sale, fair value, 12 months or greater	25,969	69,884
Available-for-sale, gross unrealized losses, 12 months or greater	(278)	(1,759)
Securities available for sale	37,701	80,400
Available-for-sale, gross unrealized losses, total	$ (358)	$ (1,914)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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