Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	12 Months Ended
Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012
Balance	$ (25,908)	$ (20,314)	$ (21,823)		$ (21,823)	$ (20,962)	$ (20,962)
Net gain/(loss) during period	284			878	(3,801)	1,124	(861)
Other comprehensive income before reclassifications	226	(5,602)	1,653
Amounts reclassified from accumulated other comprehensive income	58	8	(144)
Balance	(25,624)	(25,908)	(20,314)		(25,624)		(21,823)
Investment securities- with OTTI [Member]
Balance	(8,628)	(9,041)	(10,036)		(10,036)	(10,572)	(10,572)
Net gain/(loss) during period							536
Other comprehensive income before reclassifications	528	497	1,070
Amounts reclassified from accumulated other comprehensive income	(84)	(84)	(75)
Balance	(8,184)	(8,628)	(9,041)		(8,184)		(10,036)
Investment securities- all other [Member]
Balance	(8,695)	(3,231)	(2,966)		(2,966)	(2,633)	(2,633)
Net gain/(loss) during period							(333)
Other comprehensive income before reclassifications	(702)	(5,477)	(116)
Amounts reclassified from accumulated other comprehensive income	62	13	(149)
Balance	(9,335)	(8,695)	(3,231)		(9,335)		(2,966)
Cash Flow Hedge (OCI) [Member]
Balance	(369)	(447)	(507)		(507)	(616)	(616)
Net gain/(loss) during period							109
Other comprehensive income before reclassifications	42	78	60
Amounts reclassified from accumulated other comprehensive income	0	0	0
Balance	(327)	(369)	(447)		(327)		(507)
Pension Plan [Member]
Balance	(8,171)	(7,547)	(8,262)		(8,262)	(6,945)	(6,945)
Net gain/(loss) during period							(1,317)
Other comprehensive income before reclassifications	358	(700)	639
Amounts reclassified from accumulated other comprehensive income	76	76	76
Balance	(7,737)	(8,171)	(7,547)		(7,737)		(8,262)
SERP [Member]
Balance	(45)	(48)	(52)		(52)	(196)	(196)
Net gain/(loss) during period							144
Other comprehensive income before reclassifications	0	0	0
Amounts reclassified from accumulated other comprehensive income	4	3	4
Balance	$ (41)	$ (45)	$ (48)		$ (41)		$ (52)

- Definition

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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