Consolidated Statements of Comprehensive Income (Unaudited) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 2,712	$ 1,913
Other comprehensive income (loss):
Unrealized holding gains (loss) on available for sale securities	1,996	(623)
Tax effect of unrealized holdings gains (loss) on available for sale securities	(678)	211
Reclassification adjustment for gain recognized in income	(4)	(17)
Tax effect of reclassification adjustment for gain recognized in income	1	6
Change in unrecognized pension cost	43	158
Tax effect of change in unrecognized pension cost	(15)	(54)
Net current-period other comprehensive income (loss)	1,343	(319)
Comprehensive income	$ 4,055	$ 1,594