Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Net Income	$ 6,147		$ 5,623		$ 16,991		$ 16,011
Other comprehensive income, before reclassifications, net of tax	(770)	[1]	1,210	[1]	(15)	[1]	(2,213)	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	(25)	[1]	236	[1]	104	[1]	382	[1]
Other Comprehensive Income (Loss)	(795)		1,446		89		(1,831)
Comprehensive Income	5,352		7,069		17,080		14,180
Unrealized Gains and Losses on Available for Sale Securities [Member]
Other comprehensive income, before reclassifications, net of tax	(770)	[1]	1,210	[1]	(15)	[1]	(2,213)	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	(82)	[1]	0	[1]	(66)	[1]	(326)	[1]
Amortization of Net Retirement Plan Actuarial Loss [Member]
Other comprehensive income, before reclassifications, net of tax	0	[1]	0	[1]	0	[1]	0	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	70	[1]	235	[1]	209	[1]	707	[1]
(Accretion) Amortization of Net Retirement Plan Prior Service Credit [Member]
Other comprehensive income, before reclassifications, net of tax	0	[1]	0	[1]	0	[1]	0	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	$ (13)	[1]	$ 1	[1]	$ (39)	[1]	$ 1	[1]

[1] All amounts are net of tax. Amounts in parentheses indicate debits.