Goodwill and Other Intangible Assets (Schedule of Intangible Assets with Estimable Useful Lives) (Details) (USD $) In Thousands	Jun. 30, 2011	Dec. 31, 2010
Gross carrying amount	$ 28,812	$ 28,802
Accumulated amortization	(19,244)	(17,680)
Valuation allowance	(174)	(185)
Net amount	9,394	10,937
Core Deposit Premium [Member]
Gross carrying amount	25,720	25,720
Accumulated amortization	(17,521)	(16,108)
Valuation allowance
Net amount	8,199	9,612
Mortgage Servicing Rights [Member]
Gross carrying amount	3,092	3,082
Accumulated amortization	(1,723)	(1,572)
Valuation allowance	(174)	(185)
Net amount	$ 1,195	$ 1,325

The accumulated amount of amortization of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(1)

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- Definition

Sum of the gross carrying amounts before accumulated amortization as of the balance sheet date of all intangible assets having statutory or estimated useful lives. The aggregate gross carrying amount (including any previously recognized impairment charges) of a major finite-lived intangible asset class. A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 45
-Subparagraph a(1)

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 142
-Paragraph 42, 45

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- Definition

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 09
-Article 12

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