Loan Servicing (Activity For MSRs And Related Valuation Allowance) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2011	Dec. 31, 2010
Loan Servicing [Abstract]
Carrying amount, net, beginning of period	$ 10,488	$ 10,780
Additions	1,659	3,062
Amortization	(2,573)	(3,180)
Change in valuation allowance	(273)	(174)
Carrying amount, net, end of period	9,301	10,488
Valuation allowance, beginning of period	748	574
Additions expensed	273	174
Valuation allowance, end of period	$ 1,021	$ 748

Amortized carrying amount (balance) as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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

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-Name Accounting Standards Codification

-Topic 860

-SubTopic 50

-Section 45

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 140

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

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-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-Name FASB Staff Position (FSP)

-Number FAS140-4/FIN46(R)-8

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-Subparagraph a(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The value of new servicing assets, subsequently measured at amortized value, acquired or created during the current period through purchases or from transfers of financial assets.

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- Definition

Decreases in the value of servicing assets due to the periodic amortization in proportion to and over the period of estimated net servicing income.

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- Definition

The amount of valuation allowance applied to adjust the carrying value of servicing assets.

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- Definition

Reflects the estimated amount of impairment as of the balance sheet date of recognized servicing assets that are being amortized in proportion to and over the period of estimated net servicing income or loss.

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