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Accumulated Other Comprehensive Loss (Changes in Each Component of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Loss [Line Items]
Beginning Balance	$ (6,241)	$ (5,314)	$ (6,902)	$ (5,875)
Other comprehensive income (loss) before reclassifications	(209)	684	452	1,280
Amounts reclassified from accumulated other comprehensive loss	(18)	(79)	(18)	(114)
Net current period other comprehensive income (loss)	(227)	605	434	1,166
Ending Balance	(6,468)	(4,709)	(6,468)	(4,709)
Net Unrealized Gains and Losses on Investment Securities [Member]
Accumulated Other Comprehensive Loss [Line Items]
Beginning Balance	2,072	1,345	1,843	1,043
Other comprehensive income (loss) before reclassifications	(625)	684	(396)	1,024
Amounts reclassified from accumulated other comprehensive loss	(18)	(79)	(18)	(117)
Net current period other comprehensive income (loss)	(643)	605	(414)	907
Ending Balance	1,429	1,950	1,429	1,950
Defined Benefit Pension Items [Member]
Accumulated Other Comprehensive Loss [Line Items]
Beginning Balance	(8,313)	$ (6,659)	(8,745)	(6,918)
Other comprehensive income (loss) before reclassifications	$ 416		$ 848	256
Amounts reclassified from accumulated other comprehensive loss				3
Net current period other comprehensive income (loss)	$ 416		$ 848	259
Ending Balance	$ (7,897)	$ (6,659)	$ (7,897)	$ (6,659)

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Accumulated Other Comprehensive Loss [Line Items]

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Amounts Reclassified From Accumulated Other Comprehensive Income Loss

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The amount of other comprehensive income (loss) before reclassifications.

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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 other comprehensive income (loss) attributable to parent entity.

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