Accumulated Other Comprehensive Income (Loss) (Accumulated Other Comprehensive Income (Loss) By Component) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	$ (5,720,000)
Other comprehensive income before reclassifications, Interest rate swaps	161,000	216,000	226,000
Transfer of securities from available-for-sale to held-to-maturity	8,000	(3,533,000)	0
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	472,000	237,000	0
Reclassification adjustments for (gains) losses reclassified into income	(69,000)	116,000	(329,000)
Net current period other comprehensive (loss) income, Unrealized (gains) losses on securities	1,705,000	(6,311,000)	(336,000)
Net current period other comprehensive (loss) income, Pension and postretirement benefit plans	(1,605,000)	1,340,000	(448,000)
Balance	(5,048,000)	(5,720,000)
Transferred From Available-For-Sale to Held-To-Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Transfer of securities from available-for-sale to held-to-maturity	3,530,000
Net current period other comprehensive (loss) income, Unrealized (gains) losses on securities	(2,820,000)
Unrealized Gains (Losses) on Securities [Member] | Available-For-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(162,000)	6,033,000
Other comprehensive income before reclassifications, Unrealized (gains) losses on securities	1,713,000	(9,844,000)
Transfer of securities from available-for-sale to held-to-maturity	(8,000)	3,533,000
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	0	0
Reclassification adjustments for (gains) losses reclassified into income	(69,000)	116,000
Net current period other comprehensive (loss) income, Unrealized (gains) losses on securities	1,636,000	(6,195,000)
Balance	1,474,000	(162,000)
Unrealized Gains (Losses) on Securities [Member] | Transferred From Available-For-Sale to Held-To-Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(3,296,000)	0
Other comprehensive income before reclassifications, Unrealized (gains) losses on securities	0	0
Transfer of securities from available-for-sale to held-to-maturity	8,000	(3,533,000)
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	472,000	237,000
Reclassification adjustments for (gains) losses reclassified into income	0	0
Net current period other comprehensive (loss) income, Unrealized (gains) losses on securities	480,000	(3,296,000)
Balance	(2,816,000)	(3,296,000)
Pension Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(1,790,000)	(3,130,000)
Other comprehensive income before reclassifications, Pension and postretirement benefit plans	(1,694,000)	1,110,000
Transfer of securities from available-for-sale to held-to-maturity	0	0
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	0	0
Reclassification adjustments for (gains) losses reclassified into income, Pension and postretirement benefit plans	89,000	230,000
Net current period other comprehensive (loss) income, Pension and postretirement benefit plans	(1,605,000)	1,340,000
Balance	(3,395,000)	(1,790,000)
Interest Rate Swap [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(472,000)	(688,000)
Other comprehensive income before reclassifications, Interest rate swaps	161,000	216,000
Transfer of securities from available-for-sale to held-to-maturity	0	0
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	0	0
Reclassification adjustments for (gains) losses reclassified into income, Interest rate swaps	0	0
Net current period other comprehensive (loss) income, Interest rate swaps	161,000	216,000
Balance	(311,000)	(472,000)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance	(5,720,000)	2,215,000
Other comprehensive income before reclassifications, Accumulated other comprehensive income (loss)	180,000	(8,518,000)
Transfer of securities from available-for-sale to held-to-maturity	0	0
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	472,000	237,000
Reclassification adjustments for (gains) losses reclassified into income, Accumulated other comprehensive income (loss)	20,000	346,000
Net current periodic change, Accumulated other comprehensive income (loss)	672,000	(7,935,000)
Balance	$ (5,048,000)	$ (5,720,000)