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Investments (Unrealized Gain (Loss) on Investments) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Schedule of Investments [Line Items]
Amortized Cost	$ 153,281	$ 153,552
Gross Unrealized Gains	182	367
Gross Unrealized Losses	7,859	7,449
Investment securities - available-for-sale (at fair value)	145,604	146,470
OTTI in AOCI	(2,506)	(3,389)
Held-to-maturity amortized cost	91,878	93,632
Held-to-maturity Gross Unrealized Gains	1,117	2,220
Held-to-maturity gross unrealized losses	1,660	506
Investment securities - HTM	91,335	95,346
Held-to-maturity OTTI in AOCI	0	0
US government agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	30,000	30,000
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,139	744
Investment securities - available-for-sale (at fair value)	28,861	29,256
OTTI in AOCI	0	0
Held-to-maturity amortized cost	15,911	15,876
Held-to-maturity Gross Unrealized Gains	116	447
Held-to-maturity gross unrealized losses	0	0
Investment securities - HTM	16,027	16,323
Held-to-maturity OTTI in AOCI	0	0
Residential mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Held-to-maturity amortized cost	46,312	47,771
Held-to-maturity Gross Unrealized Gains	12	94
Held-to-maturity gross unrealized losses	1,216	423
Investment securities - HTM	45,108	47,442
Held-to-maturity OTTI in AOCI	0	0
Commercial mortgage-backed agencies [Member]
Schedule of Investments [Line Items]
Amortized Cost	41,431	41,771
Gross Unrealized Gains	0	0
Gross Unrealized Losses	1,403	880
Investment securities - available-for-sale (at fair value)	40,028	40,891
OTTI in AOCI	0	0
Held-to-maturity amortized cost	17,090	17,288
Held-to-maturity Gross Unrealized Gains	66	236
Held-to-maturity gross unrealized losses	166	6
Investment securities - HTM	16,990	17,518
Held-to-maturity OTTI in AOCI	0	0
Collateralized mortgage obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	40,229	41,298
Gross Unrealized Gains	1	2
Gross Unrealized Losses	1,341	916
Investment securities - available-for-sale (at fair value)	38,889	40,384
OTTI in AOCI	0	0
Held-to-maturity amortized cost	4,055	4,187
Held-to-maturity Gross Unrealized Gains	0	0
Held-to-maturity gross unrealized losses	187	69
Investment securities - HTM	3,868	4,118
Held-to-maturity OTTI in AOCI	0	0
Obligations of states and political subdivisions [Member]
Schedule of Investments [Line Items]
Amortized Cost	21,915	20,772
Gross Unrealized Gains	181	365
Gross Unrealized Losses	247	118
Investment securities - available-for-sale (at fair value)	21,849	21,019
OTTI in AOCI	0	0
Held-to-maturity amortized cost	8,510	8,510
Held-to-maturity Gross Unrealized Gains	923	1,443
Held-to-maturity gross unrealized losses	91	8
Investment securities - HTM	9,342	9,945
Held-to-maturity OTTI in AOCI	0	0
Collateralized debt obligations [Member]
Schedule of Investments [Line Items]
Amortized Cost	19,706	19,711
Gross Unrealized Gains	0	0
Gross Unrealized Losses	3,729	4,791
Investment securities - available-for-sale (at fair value)	15,977	14,920
OTTI in AOCI	$ (2,506)	$ (3,389)

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Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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