Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Net Income	$ 5,320		$ 5,181
Other comprehensive income, before reclassifications, net of tax	241	[1]	220	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	57	[1]	(82)	[1]
Other Comprehensive Income	298		138
Comprehensive Income	5,618		5,319
Unrealized Gains and Losses on Available for Sale Securities [Member]
Other comprehensive income, before reclassifications, net of tax	241	[1]	220	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	0	[1]	(318)	[1]
Amortization of Net Retirement Plan Actuarial Loss [Member]
Other comprehensive income, before reclassifications, net of tax	0	[1]	0	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	70	[1]	236	[1]
Accretion of Net Retirement Plan Prior Service Credit [Member]
Other comprehensive income, before reclassifications, net of tax	0	[1]	0	[1]
Reclassification from Accumulated Other Comprehensive Income, net of tax	$ (13)	[1]	$ 0	[1]

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