Consolidated Statements of Comprehensive Income (Parenthetical) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Consolidated Statements of Comprehensive Income (Loss) [Abstract]
Other Comprehensive Income, Unrealized Holding Gain (Loss) on Securities Arising During Period, before Tax	$ 1,854	$ 125	$ 2,459	$ 2,993
Other Comprehensive Income (Loss), Reclassification Adjustment for Sale of Securities Included in Net Income, Tax	0	640	774	640
Other Comprehensive Income, Reclassification Adjustment for Write-down of Securities Included in Net Income, before Tax	$ 0	$ 40	$ 31	$ 42