Accumulated Other Comprehensive Loss (Schedule of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015
Beginning balance	$ (17,702)	$ (16,829)	$ (20,233)
Other comprehensive income/(loss) before reclassifications	414	(1,015)	729
Amounts reclassified from accumulated other comprehensive income	372	142	2,675
Ending balance	(16,916)	(17,702)	(16,829)
Investment securities- with OTTI [Member]
Beginning balance	(1,387)	(466)	(3,679)
Other comprehensive income/(loss) before reclassifications	1,099	(899)	1,154
Amounts reclassified from accumulated other comprehensive income	19	(22)	2,059
Ending balance	(269)	(1,387)	(466)
Investment Securities -All Other AFS [Member]
Beginning balance	(951)	(1,385)	(2,555)
Other comprehensive income/(loss) before reclassifications	(169)	558	1,344
Amounts reclassified from accumulated other comprehensive income	(12)	(124)	(174)
Ending balance	(1,132)	(951)	(1,385)
Investment Securities HTM [Member]
Beginning balance	(1,828)	(1,971)	(2,255)
Other comprehensive income/(loss) before reclassifications	0	0	0
Amounts reclassified from accumulated other comprehensive income	222	143	284
Ending balance	(1,606)	(1,828)	(1,971)
Cash Flow Hedge (OCI) [Member]
Beginning balance	(370)	(39)	(119)
Other comprehensive income/(loss) before reclassifications	(306)	(331)	80
Amounts reclassified from accumulated other comprehensive income	0	0	0
Ending balance	(676)	(370)	(39)
Pension Plan [Member]
Beginning balance	(12,876)	(12,663)	(11,392)
Other comprehensive income/(loss) before reclassifications	(210)	(343)	(1,736)
Amounts reclassified from accumulated other comprehensive income	128	130	465
Ending balance	(12,958)	(12,876)	(12,663)
SERP [Member]
Beginning balance	(290)	(305)	(233)
Other comprehensive income/(loss) before reclassifications	0	0	(113)
Amounts reclassified from accumulated other comprehensive income	15	15	41
Ending balance	$ (275)	$ (290)	$ (305)