Consolidated Statements Of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Consolidated Statements Of Comprehensive Income [Abstract]
Net income	$ 15,194	$ 14,620	$ 15,461
Other comprehensive (loss) income, net of tax:
Change in net unrealized (loss) gain on securities available for sale, net of taxes of $(181), $1,394, and $300	(336)	2,590	558
Reclassification adjustments for net securities gain included in net income, net of taxes of $(177), $(348) and $(729)	(329)	(646)	(1,354)
Change in net unrealized loss on interest rate swaps, net of taxes of $122, $(66) and $(197)	226	(123)	(366)
Pension liability adjustment, net of taxes of $(241), $(213) and $93	(448)	(396)	172
Other comprehensive (loss) income	(887)	1,425	(990)
Comprehensive income	$ 14,307	$ 16,045	$ 14,471