Accumulated Other Comprehensive Income (Loss) (Accumulated Balances for Each Classification of Other Comprehensive Income) (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 Income (Loss) [Line Items]
Beginning Balance			$ (5,048)
Transfer of securities from available-for-sale to held-to-maturity	$ 0	$ 0	0	$ 8
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	128	111	252	224
Other comprehensive income	(870)	1,052	125	1,937
Ending Balance	(4,923)		(4,923)
Losses on Securities [Member] | Available-For-Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	2,265	540	1,482	(162)
Other comprehensive income before reclassifications	(1,065)	907	(282)	1,699
Transfer of securities from available-for-sale to held-to-maturity				(8)
Reclassification adjustments for (gains) losses reclassified into income		(11)		(93)
Other comprehensive income	(1,065)	896	(282)	1,598
Ending Balance	1,200	1,436	1,200	1,436
Losses on Securities [Member] | Transferred From Available-For-Sale to Held-To-Maturity [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(2,700)	(3,175)	(2,824)	(3,296)
Transfer of securities from available-for-sale to held-to-maturity				8
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	128	111	252	224
Other comprehensive income	128	111	252	232
Ending Balance	(2,572)	(3,064)	(2,572)	(3,064)
Pension Plan [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(3,328)	(1,769)	(3,395)	(1,790)
Reclassification adjustments for (gains) losses reclassified into income	67	21	134	42
Other comprehensive income	67	21	134	42
Ending Balance	(3,261)	(1,748)	(3,261)	(1,748)
Interst Rate Swaps [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(290)	(431)	(311)	(472)
Other comprehensive income before reclassifications		24	21	65
Other comprehensive income		24	21	65
Ending Balance	(290)	(407)	(290)	(407)
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning Balance	(4,053)	(4,835)	(5,048)	(5,720)
Other comprehensive income before reclassifications	(1,065)	931	(261)	1,764
Accretion of unrealized losses of securities transferred from available-for-sale to held-to-maturity recognized in other comprehensive income	128	111	252	224
Reclassification adjustments for (gains) losses reclassified into income	67	10	134	(51)
Other comprehensive income	(870)	1,052	125	1,937
Ending Balance	$ (4,923)	$ (3,783)	$ (4,923)	$ (3,783)