Business Combinations (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		3 Months Ended									3 Months Ended		3 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011 Summit Bank [Member] Federal Deposit Insurance Corporation Indemnification Asset [Member]	Sep. 30, 2011 First Heritage Bank [Member] Federal Deposit Insurance Corporation Indemnification Asset [Member]	Sep. 30, 2011 Summit Bank [Member] Loans Receivable [Member]	Sep. 30, 2011 First Heritage Bank [Member] Loans Receivable [Member]	Sep. 30, 2011 Summit Bank [Member] Goodwill [Member]	Sep. 30, 2011 First Heritage Bank [Member] Goodwill [Member]	Sep. 30, 2011 Summit Bank [Member] Other Real Estate Owned [Member]	Sep. 30, 2011 Summit Bank [Member]	May 20, 2011 Summit Bank [Member]	Sep. 30, 2011 First Heritage Bank [Member]	May 27, 2011 First Heritage Bank [Member]	Sep. 30, 2011 Bank of Whitman [Member]	Aug. 05, 2011 Bank of Whitman [Member]	Sep. 30, 2011 Covered Assets [Member]
Acquisition date										May 20, 2011		May 27, 2011		August 5, 2011
Business combination adjustments to provisional information			$ 3,029	$ 427	$ (1,669)	$ (369)	$ (851)	$ (58)	$ (509)
Percentage of loss shared by FDIC																80.00%
Percentage of Loss Recovery Shared by FDIC																80.00%
Goodwill											(2,919)		(5,876)
Bargain purchase gain, net of tax	1,830	9,818												1,830
Core deposit intangible											$ 509		$ 1,337		$ 3,943