Accumulated Other Comprehensive Income (Details 2) (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 on Derivatives [Line Items]
Change in funded status of post retirement benefits	$ 116		$ 340		$ 346		$ 892
Net of tax	116		340		347		888
Amount Reclassified From Accumulated Other Comprehensive Income [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Net securities gains (losses)	0		0		(1)		7
Income tax expense	0		0		0		(3)
Unrealized gain (loss) on securities, net of tax	0		0		(1)		4
Change in funded status of post retirement benefits	(237)	[1]	(566)	[1]	(711)	[1]	(1,486)	[1]
Income tax expense	121		226		365		594
Net of tax	(116)		(340)		(346)		(892)
Net of tax	$ (116)		$ (340)		$ (347)		$ (888)

[1] (a) Included in the computation of net periodic benefit cost. (see Footnote 7 for additional details).