LOANS AND ALLOWANCE FOR LOAN LOSSES (Summary of Impaired Loan Balances and Associated Allowance by Portfolio Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 7,668	$ 7,376
Recorded Investment	19,391	19,781
Unpaid Principal Balance	9,119	9,476
Unpaid Principal Balance	19,391	19,781
Related Allowance
Average Recorded Investment	27,273	5,616
Interest Income Recognized	64	72
Recorded Investment	27,059	27,157
Unpaid Principal Balance	28,510	29,257
Related Allowance	3,541	3,106
Average Recorded Investment	9,468	27,207
Average Recorded Investment	17,805	21,591
Interest Income Recognized	30	186
Interest Income Recognized	34	114
Residential real estate loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	2,850	2,784
Recorded Investment	10,904	11,021
Unpaid Principal Balance	3,672	3,841
Unpaid Principal Balance	10,904	11,021
Related Allowance
Average Recorded Investment	5,028	2,548
Interest Income Recognized	7	26
Related Allowance	2,468	2,255
Average Recorded Investment	8,689	10,585
Interest Income Recognized	29	114
Commercial real estate loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	3,953	3,672
Recorded Investment	3,680	4,296
Unpaid Principal Balance	4,217	4,127
Unpaid Principal Balance	3,680	4,296
Related Allowance
Average Recorded Investment	3,516	2,056
Interest Income Recognized	22	33
Related Allowance	197	265
Average Recorded Investment	4,343	5,551
Interest Income Recognized	3
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	327	639
Recorded Investment	3,002	2,971
Unpaid Principal Balance	421	956
Unpaid Principal Balance	3,002	2,971
Related Allowance
Average Recorded Investment	558	389
Interest Income Recognized	1	13
Related Allowance	325	286
Average Recorded Investment	2,788	3,927
Interest Income Recognized	2
Home equity loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	536	279
Recorded Investment	1,319	1,236
Unpaid Principal Balance	807	550
Unpaid Principal Balance	1,319	1,236
Related Allowance
Average Recorded Investment	364	617
Interest Income Recognized
Related Allowance	469	261
Average Recorded Investment	1,528	1,289
Interest Income Recognized
Consumer loans
Financing Receivable, Impaired [Line Items]
Recorded Investment	2	2
Recorded Investment	486	257
Unpaid Principal Balance	2	2
Unpaid Principal Balance	486	257
Related Allowance
Average Recorded Investment	2	6
Interest Income Recognized
Related Allowance	82	39
Average Recorded Investment	457	239
Interest Income Recognized

Impaired Financing Receivable, With No Related Allowance, Related Allowance

No definition available.

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- Definition

Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 15

-Subparagraph (c)(1)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5212-111524

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 17

-URI http://asc.fasb.org/extlink&oid=7512638&loc=d3e5258-111524

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Amount of interest income recognized that the financing receivables (with related allowance for credit losses and without a related allowance for credit losses) were impaired.

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+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 310

-SubTopic 10

-Section 50

-Paragraph 14A

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=7512638&loc=SL6953550-111524

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