LOANS AND LEASES - Restructured Loans (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2015 USD ($) loans	Sep. 30, 2014 USD ($) loans	Sep. 30, 2015 USD ($) loans d	Sep. 30, 2014 USD ($) loans	Dec. 31, 2014 USD ($) loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reclassification from/(to) non-accretable difference	$ 76,000	$ (2,295,000)	$ (2,048,000)	$ 19,864,000
Extended Maturities	2,166,000	3,505,000	12,827,000	4,402,000
Adjusted Interest Rates	0	0	0	301,000
Combined Rate And Maturity	0	402,000	1,219,000	1,643,000
Forebearance Agreements	0	0	260,000	320,000
Other	1,180,000	245,000	4,196,000	1,685,000
Total	$ 3,346,000	$ 4,152,000	$ 18,502,000	$ 8,351,000
Restructured loans, Number of Loans | loans	21	24	75	84
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 3,531,000	$ 4,541,000	$ 22,844,000	$ 9,045,000
Restructured loans, Period End Balance	$ 3,346,000	$ 4,152,000	$ 18,502,000	$ 8,351,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	3	1	8	8
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 358,000	$ 1,000	$ 1,577,000	$ 263,000
Number of Restructured Loans | loans	271		271		262
Total restructured loans	$ 33,800,000		$ 33,800,000		$ 28,200,000
Restructured loans on accrual status	20,226,000		20,226,000		15,928,000
Restructured Loans, Nonaccrual Status	13,600,000		13,600,000		12,300,000
Allowance for loan and lease losses lncluded in reserves for restructured loans	2,400,000		2,400,000		3,700,000
Restructured loans uncollectible portion written off			2,500,000		1,000,000
Accruing TDRs performing in accordance with restructured terms for more than one year	$ 8,800,000		$ 8,800,000		$ 10,500,000
Restructured loans performance threshold (days) | d			90
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	5	6	27	11
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 171,000	$ 3,712,000	$ 1,686,000	$ 3,938,000
Restructured loans, Period End Balance	$ 166,000	$ 3,384,000	$ 1,676,000	$ 3,594,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	2	0	2	1
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 344,000	$ 0	$ 344,000	$ 143,000
Real estate - construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	0	0	0	0
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 0	$ 0	$ 0	$ 0
Restructured loans, Period End Balance	$ 0	$ 0	$ 0	$ 0
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	0	0	0	0
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 0	$ 0	$ 0	$ 0
Real estate - commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	2	2	14	11
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 2,159,000	$ 375,000	$ 17,499,000	$ 2,583,000
Restructured loans, Period End Balance	$ 2,000,000	$ 373,000	$ 13,734,000	$ 2,453,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	0	0	4	0
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 0	$ 0	$ 1,146,000	$ 0
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	6	7	9	30
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 920,000	$ 322,000	$ 1,282,000	$ 1,712,000
Restructured loans, Period End Balance	$ 901,000	$ 264,000	$ 1,228,000	$ 1,527,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	0	1	1	3
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 0	$ 1,000	$ 73,000	$ 28,000
Installment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	2	3	9	6
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 50,000	$ 6,000	$ 96,000	$ 21,000
Restructured loans, Period End Balance	$ 50,000	$ 6,000	$ 96,000	$ 19,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	0	0	0	1
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 0	$ 0	$ 0	$ 0
Home equity
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured loans, Number of Loans | loans	6	6	16	26
Restructured loans, Restructured loans, Pre-Modification Loan Balance	$ 231,000	$ 126,000	$ 2,281,000	$ 791,000
Restructured loans, Period End Balance	$ 229,000	$ 125,000	$ 1,768,000	$ 758,000
Restructured loans with payment default within 12 months of modification, Number of Loans | loans	1	0	1	3
Restructured loans with payment default within 12 months of modification, Period End Balance	$ 14,000	$ 0	$ 14,000	$ 92,000
Non Covered Loans | Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructured Loans, Loan Relationships, Review Threshold Amount Minimum			$ 100,000