Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net Income		$ 5,933	$ 6,147	$ 18,093	$ 16,991
Other comprehensive income, before reclassifications, net of tax	[1]	543	(770)	384	(15)
Reclassification from Accumulated Other Comprehensive Income, net of tax	[1]	108	(25)	262	104
Other Comprehensive Income (Loss)		651	(795)	646	89
Comprehensive Income		6,584	5,352	18,739	17,080
Unrealized Gains and Losses on Available for Sale Securities [Member]
Other comprehensive income, before reclassifications, net of tax		543	(770)	384	(15)
Reclassification from Accumulated Other Comprehensive Income, net of tax		0	(82)	(65)	(66)
Amortization of Net Retirement Plan Actuarial Loss [Member]
Other comprehensive income, before reclassifications, net of tax	[1]	0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, net of tax		117	70	352	209
Accretion of Net Retirement Plan Prior Service Credit [Member]
Other comprehensive income, before reclassifications, net of tax	[1]	0	0	0	0
Reclassification from Accumulated Other Comprehensive Income, net of tax		$ (9)	$ (13)	$ (25)	$ (39)

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