Business Combinations (Summary of the Amounts Recognized as of the Acquisition Date for Each Major Class of Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010	Aug. 05, 2011 Bank of Whitman [Member]	May 20, 2011 Summit Bank [Member]	May 27, 2011 First Heritage Bank [Member]
Cash and due from banks			$ 52,072	$ 1,837	$ 4,688
Interest-earning deposits with banks and federal funds sold				14,198
Interest-earning deposits with banks					6,689
Investment securities			16,298	871	5,303
FHLB stock	22,215	17,908	3,977	406	477
Acquired loans			200,041	69,783	81,488
Accrued interest receivable	17,428	11,164	1,975	429	476
Premises and equipment			86	42	5,339
FDIC receivable			156,710	6,984	4,751
Other real estate owned covered by loss sharing				2,162	8,225
Goodwill				2,919	5,876
Core deposit intangible			3,943	509	1,337
Federal Deposit Insurance Corp Indemnification Asset				30,203	38,531
Other assets			2,447	786	1,804
Total assets acquired			437,549	131,129	164,984
Deposits			401,127	123,279	159,525
Federal Home Loan Bank advances			32,949	7,772	5,003
Accrued interest payable			213	71	421
Deferred tax liability			1,034
Other liabilities			396	7	35
Total liabilities assumed			435,719	131,129	164,984
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net			$ 1,830