LOANS (excluding covered loans) - Commercial and Consumer Credit Exposure by Risk Attribute (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Commercial	$ 1,118,057	$ 1,035,668
Real Estate - Construction	87,996	80,741
Real Estate - Commercial	1,513,891	1,496,987
Real Estate Residential	360,671	352,931
Installment	44,911	47,133
Home equity	374,427	376,454
Non Covered Loans
Financing Receivable, Recorded Investment [Line Items]
Commercial	1,118,057	1,035,668
Real Estate - Construction	87,996	80,741
Real Estate - Commercial	1,513,891	1,496,987
Total Commercial	2,719,944	2,613,396
Real Estate Residential	360,671	352,931
Installment	44,911	47,133
Home equity	374,427	376,454
Other	114,250	115,727
Total	894,259	892,245
Non Covered Loans \| Pass
Financing Receivable, Recorded Investment [Line Items]
Commercial	1,070,038	991,161
Real Estate - Construction	86,128	78,872
Real Estate - Commercial	1,445,777	1,422,215
Total Commercial	2,601,943	2,492,248
Non Covered Loans \| Special Mention
Financing Receivable, Recorded Investment [Line Items]
Commercial	27,331	23,053
Real Estate - Construction	65	65
Real Estate - Commercial	16,168	23,832
Total Commercial	43,564	46,950
Non Covered Loans \| Substandard
Financing Receivable, Recorded Investment [Line Items]
Commercial	20,688	21,454
Real Estate - Construction	1,803	1,804
Real Estate - Commercial	51,946	50,940
Total Commercial	74,437	74,198
Non Covered Loans \| Doubtful
Financing Receivable, Recorded Investment [Line Items]
Commercial	0	0
Real Estate - Construction	0	0
Real Estate - Commercial	0	0
Total Commercial	0	0
Non Covered Loans \| Performing
Financing Receivable, Recorded Investment [Line Items]
Real Estate Residential	352,514	344,325
Installment	44,512	46,559
Home equity	371,727	373,472
Other	114,250	115,727
Total	883,003	880,083
Non Covered Loans \| Nonperforming
Financing Receivable, Recorded Investment [Line Items]
Real Estate Residential	8,157	8,606
Installment	399	574
Home equity	2,700	2,982
Other	0	0
Total	$ 11,256	$ 12,162

Loans and Leases Receivable, Gross, Total of Commercial, Consumer Real Estate/Construction and Commercial Mortgage

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Amount before allowance of commercial loans and leases receivable includes, but not limited to, commercial and industrial loans, agricultural loans, mortgage loans, promissory notes, interbank and other loans to financial institutions, draws against credit facilities, trade financing, lease financings. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer loans, including, but not limited to, mortgage, home equity, vehicles, credit card, installment, and lease financing. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of revolving, open-end loan, extended under a line of credit and secured by the borrower's residential property. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer loans to acquire durable goods, including, but not limited to, automobiles, recreational vehicles, boats, refrigerators, washers and dryers. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer mortgage. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes subordinated loans such as home equity lines of credit and loans and leases covered under loss sharing agreements.

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Amount before allowance of consumer real estate loans. Includes, but not limited to, construction financing, residential mortgage loans, and home equity lines of credit. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of other loans and leases not otherwise specified in the taxonomy. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Amount before allowance of mortgage loans on existing land or building. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans covered under loss sharing agreements.

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