Comprehensive Income (Reclassification Adjustment Details) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (gains) losses on investment securities	$ 37	$ (1)	$ (106)	$ 12
Provision for income taxes	843	1,235	2,923	3,845
Reclassification Out of Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Reclassification adjustments, Net of tax	45	57	(6)	181
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Unrealized Gains (Losses) on Securities [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (gains) losses on investment securities	37	(1)	(106)	12
Total before tax	37	(1)	(106)	12
Provision for income taxes	(13)	1	37	(4)
Reclassification adjustments, Net of tax	24		(69)	8
Reclassification Out of Accumulated Other Comprehensive Income [Member] | Pension and Postretirement Benefit Plans [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Compensation and benefits	31	87	97	266
Total before tax	31	87	97	266
Provision for income taxes	(10)	(30)	(34)	(93)
Reclassification adjustments, Net of tax	$ 21	$ 57	$ 63	$ 173