Consolidated Statements Of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Consolidated Statements Of Comprehensive Income [Abstract]
Income taxes arising from net unrealized holding gain on investments	$ 32	$ 22	$ 9	$ 73
Income tax (benefit) arising from reclassification adjustment for loss (gain) reported in net income		82	(49)	172
Pre-taxloss (gain) of reclassification adjustment for gain reported in net income	$ (235)		$ 139	$ (491)