Consolidated Statements of Comprehensive Income (unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Mar. 31, 2014	Mar. 31, 2013
Consolidated Statements Of Comprehensive Income
Net income	$ 5,676	$ 3,100
Unrealized gains (losses) on securities available for sale:
Unrealized holding gains (losses) arising during the period, pretax	303	(308)
Tax (expense) benefit	(118)	120
Postretirement Plans:
Amortization of unrecognized net actuarial (gain) loss	(54)	3
Tax expense (benefit)	33	(1)
Other comprehensive income (loss)	164	(186)
Comprehensive income	$ 5,840	$ 2,914

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