v2.4.0.6

Federal Home Loan Bank and Federal Reserve Bank Borrowings (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
FHLB Fixed Rate Advances, Maturities Summary [Abstract]
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Within 1 year	4.22%
FHLB Fixed Rate Advances, Amount, Within 1 year	$ 8,000
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Over 1 through 5 years	2.54%
FHLB Fixed Rate Advances, Over 1 through 5 years	103,694
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Over 5 through 10 years	5.30%
FHLB Fixed Rate Advances, Over 5 through 10 years	1,416
FHLB Fixed Rate Advances, Weighted Average Interest Rate, Due after 10 years	5.37%
FHLB Fixed Rate Advances, Due after 10 years	5,000
FHLB Fixed Rate Advances, Total Amount before valuation adjustment	118,110
Valuation adjustment from acquisition accounting	899
FHLB Fixed Rate Advances, Total Amount	119,009
Federal Home Loan Bank, Advances, Activity for Year [Abstract]
FHLB Advances	119,009	119,405	100,000
Average balance during the year	120,419	123,685	111,211
Maximum month-end balance during the year	127,426	154,916	178,000
Weighted average rate during the year	2.76%	2.75%	2.38%
Weighted average rate at December 31	2.81%	2.81%	2.49%
FHLB Advances, Collateral Pledged	539,454	523,051
FHLB Borrowing Capacity	419,115	402,048
Federal Reserve Bank, Advances, Activity for Year [Abstract]
Federal Reserve Bank Advances, Collateral Pledged	404,444	449,418
Federal Reserve Bank borrowing capacity	404,444	449,418
Securities Investment [Member]
Federal Home Loan Bank, Advances, Activity for Year [Abstract]
FHLB Advances, Collateral Pledged	77,414	96,496
Federal Reserve Bank, Advances, Activity for Year [Abstract]
Federal Reserve Bank Advances, Collateral Pledged	53,122	135,966
Loans Receivable [Member]
Federal Home Loan Bank, Advances, Activity for Year [Abstract]
FHLB Advances, Collateral Pledged	462,040	426,555
Commercial Loan [Member]
Federal Reserve Bank, Advances, Activity for Year [Abstract]
Federal Reserve Bank Advances, Collateral Pledged	351,322	313,452
Federal Reserve Bank Advances [Member]
Federal Reserve Bank, Advances, Activity for Year [Abstract]
Short-term Debt	0	0	0
Short-term Debt, Average Outstanding Amount	0	0	38,205
Short-term Debt, Maximum Month-end Outstanding Amount	$ 0	$ 0	$ 100,000
Short-term Debt, Weighted Average Interest Rate	0.00%	0.00%	0.30%

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- Definition

Reflects the calculation as of the balance sheet date of the average interest rate weighted by the amount of short-term debt outstanding by type or by instrument at that time.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19

-Subparagraph b

-Article 5



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.19(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_ShortTermDebtWeightedAverageInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant