MORTGAGE SERVICING RIGHTS (Details) (USD $)	3 Months Ended	12 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Dec. 31, 2012
MORTGAGE SERVICING RIGHTS
Residential first mortgage loans the Corporation has obligations to service	$ 109,000,000
Annual constant prepayment speed (as a percent)	15.90%
Discount rate (as a percent)	7.50%
Changes in mortgage servicing rights capitalized and amortized, along with the aggregate activity in related valuation allowances
Balance at beginning of period	638,000	400,000	400,000
Additions from loans sold with servicing retained	75,000	71,000	344,000
Amortization	(38,000)	(21,000)	(106,000)
Fair value of MSRs at end of period	$ 675,000	$ 450,000	$ 638,000

Represents the amount of mortgage loans the entity has an obligation to service.

No definition available.

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Amount of expense charged against earnings for the periodic recognition of servicing assets relative to estimated net servicing income.

+ References

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- Definition

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

+ References

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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Fair value 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.

+ References

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

-Publisher FASB

-Name FASB Staff Position (FSP)

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

-Paragraph B9

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

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- Definition

The discount rate used to estimate the fair value of servicing assets and servicing liabilities.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-Paragraph 17

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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.

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- Definition

The estimated speed of prepayments of principal on financial assets which may be one of the factors applied in estimating the fair value of servicing assets and servicing liabilities.

+ References

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