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Securities - Available-for-sale Securities in Continuous Loss Position (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	$ 5,165	$ 41,734
Available-for-sale, gross unrealized losses, less than 12 months	(20)	(542)
Available-for-sale, fair value, 12 months or greater	57,698	89,289
Available-for-sale, gross unrealized losses, 12 months or greater	(513)	(2,428)
Securities available for sale	62,863	131,023
Available-for-sale, gross unrealized losses, total	(533)	(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	0	14,763
Available-for-sale, gross unrealized losses, less than 12 months	0	(237)
Available-for-sale, fair value, 12 months or greater	10,935	13,728
Available-for-sale, gross unrealized losses, 12 months or greater	(65)	(389)
Securities available for sale	10,935	28,491
Available-for-sale, gross unrealized losses, total	(65)	(626)
Municipal securities [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	0	16,455
Available-for-sale, gross unrealized losses, less than 12 months	0	(150)
Available-for-sale, fair value, 12 months or greater	2,021	4,767
Available-for-sale, gross unrealized losses, 12 months or greater	(17)	(213)
Securities available for sale	2,021	21,222
Available-for-sale, gross unrealized losses, total	(17)	(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	937	910
Available-for-sale, gross unrealized losses, 12 months or greater	(42)	(67)
Securities available for sale	937	910
Available-for-sale, gross unrealized losses, total	(42)	(67)
Mortgage-backed securities (GSEs) [Member]
Debt Securities, Available-for-sale [Line Items]
Available-for-sale, fair value, less than 12 months	5,165	10,516
Available-for-sale, gross unrealized losses, less than 12 months	(20)	(155)
Available-for-sale, fair value, 12 months or greater	43,805	69,884
Available-for-sale, gross unrealized losses, 12 months or greater	(389)	(1,759)
Securities available for sale	48,970	80,400
Available-for-sale, gross unrealized losses, total	$ (409)	$ (1,914)

X

- Definition

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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