Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended			12 Months Ended
	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Beginning balance	$ (15,052)	$ (18,614)	$ (24,213)	$ (21,823)
Other comprehensive income/(loss) before reclassifications	(264)	3,542	5,601	(2,338)
Amounts reclassified from accumulated other comprehensive income	(81)	20	(2)	(52)
Ending balance	(15,397)	(15,052)	(18,614)	(24,213)
Investment Securities- with OTTI AFS [Member]
Beginning balance	(4,581)	(4,989)	(7,623)	(10,036)
Other comprehensive income/(loss) before reclassifications	448	511	2,730	2,735
Amounts reclassified from accumulated other comprehensive income	(102)	(103)	(96)	(322)
Ending balance	(4,235)	(4,581)	(4,989)	(7,623)
Investment Securities -All Other AFS [Member]
Beginning balance	(2,950)	(8,256)	(11,292)	(2,966)
Other comprehensive income/(loss) before reclassifications	1	5,254	2,995	(8,279)
Amounts reclassified from accumulated other comprehensive income	(88)	52	41	(47)
Ending balance	(3,037)	(2,950)	(8,256)	(11,292)
Investment Securities HTM [Member]
Beginning balance	(2,372)	0	0	0
Other comprehensive income/(loss) before reclassifications	0	(2,391)	0	0
Amounts reclassified from accumulated other comprehensive income	57	19	0	0
Ending balance	(2,315)	(2,372)	0	0
Cash Flow Hedge (OCI) [Member]
Beginning balance	(163)	(219)	(274)	(507)
Other comprehensive income/(loss) before reclassifications	26	56	55	233
Amounts reclassified from accumulated other comprehensive income	0	0	0	0
Ending balance	(137)	(163)	(219)	(274)
Pension Plan [Member]
Beginning balance	(5,051)	(5,215)	(5,088)	(8,262)
Other comprehensive income/(loss) before reclassifications	(739)	112	(179)	2,871
Amounts reclassified from accumulated other comprehensive income	52	52	52	303
Ending balance	(5,738)	(5,051)	(5,215)	(5,088)
SERP [Member]
Beginning balance	65	65	64	(52)
Other comprehensive income/(loss) before reclassifications	0	0	0	102
Amounts reclassified from accumulated other comprehensive income	0	0	1	14
Ending balance	$ 65	$ 65	$ 65	$ 64