Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 3,609	$ 3,613
Other comprehensive (loss) income, net of tax:
Change in net unrealized gain (loss) on securities available for sale, net of taxes of $(692) and $206	(1,285)	383
Reclassification adjustments for net securities losses (gains) included in net income, net of taxes of $0 and $(26)	0	(50)
Change in net unrealized loss on interest rate swaps, net of taxes of $26 and $43	48	80
Pension liability adjustment, net of taxes of $32 and $22	60	41
Other comprehensive (loss) income	(1,177)	454
Comprehensive income	$ 2,432	$ 4,067