Accumulated Other Comprehensive Income (Loss) (Changes in AOCI by component) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	$ (2,602)	$ (2,778)	$ 221
OCI before reclassifications	(6,931)	343	(5,335)
Amounts reclassified from AOCI	345	270	763
Net unrealized gains (losses)	(6,586)	613	(4,572)
Tax effect	1,280	(70)	1,573
Unrealized gains (losses), net of tax	(5,306)	543	(2,999)
Tax Cuts and Jobs Act Reclassification to Retained Earnings		(367)
Cumulative Effect of New Accounting Principle in Period of Adoption	0
Ending Balance	(7,685)	(2,602)	(2,778)
Unrealized Holding Gains (Losses) on AFS Securities [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	391	30	3,536
OCI before reclassifications	(7,229)	289	(5,865)
Amounts reclassified from AOCI	0	(142)	525
Net unrealized gains (losses)	(7,229)	147	(5,340)
Tax effect	1,415	89	1,834
Unrealized gains (losses), net of tax	(5,814)	236	(3,506)
Tax Cuts and Jobs Act Reclassification to Retained Earnings		125
Cumulative Effect of New Accounting Principle in Period of Adoption	223
Ending Balance	(5,200)	391	30
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	230	164	0
OCI before reclassifications	33	43	248
Amounts reclassified from AOCI	0	0	0
Net unrealized gains (losses)	33	43	248
Tax effect	(7)	(15)	(84)
Unrealized gains (losses), net of tax	26	28	164
Tax Cuts and Jobs Act Reclassification to Retained Earnings		38
Cumulative Effect of New Accounting Principle in Period of Adoption	0
Ending Balance	256	230	164
Defined Benefit Pension Plan [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Beginning Balance	(3,223)	(2,972)	(3,315)
OCI before reclassifications	265	11	282
Amounts reclassified from AOCI	345	412	238
Net unrealized gains (losses)	610	423	520
Tax effect	(128)	(144)	(177)
Unrealized gains (losses), net of tax	482	279	343
Tax Cuts and Jobs Act Reclassification to Retained Earnings		(530)
Cumulative Effect of New Accounting Principle in Period of Adoption	0
Ending Balance	(2,741)	(3,223)	$ (2,972)
AOCI Attributable to Parent [Member]
Increase (Decrease) in Accumulated Other Comprehensive Income [Roll Forward]
Tax Cuts and Jobs Act Reclassification to Retained Earnings		$ (367)
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 223

Tax Cuts and Jobs Act Reclassification to Retained Earnings

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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Amount before tax and reclassification adjustments of other comprehensive income (loss).

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Amount before tax, after reclassification adjustments of other comprehensive income (loss).

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Amount before tax of reclassification adjustments of other comprehensive income (loss).

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