Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 1,963	$ 1,976
Other comprehensive income:
Net unrealized holding gain (loss) on securities available-for-sale	2,681	(940)
Net unrealized gain (loss) on securities available-for-sale for which a portion of an other-than-temporary impairment has been recognized in income	634	(10)
Reclassification adjustment for realized gains included in net income	(150)	(339)
Net unrealized gain on derivative used for cash flow hedges	32	37
Other Comprehensive Income (Loss), before Tax, Total	3,197	(1,252)
Income tax (expense) benefit related to other comprehensive income	(1,098)	438
Other comprehensive income (loss)	2,099	(814)
Comprehensive income	$ 4,062	$ 1,162