CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement Of Income And Comprehensive Income [Abstract]
Reclassification of realized gains, tax	$ 22	$ 12	$ 78	$ 117
Unrealized (loss) gains, available for sale, tax	(23)	(6)	194	(211)
Unrealized (loss) gains, transfer from available for sale to held to maturity, tax	$ 0	$ 0	$ (1)	$ 8