LOANS AND LEASES - Nonaccrual, Restructured and Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Financing Receivable, Modifications [Line Items]
Average current balance	$ 59,910	$ 51,218	$ 55,543	$ 53,103
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	26	66	52	162
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	306	239	648	451
Nonaccrual loans	36,571		36,571		$ 17,730
Accruing trouble debt restructurings	20,135		20,135		30,240
Total impaired loans	56,706		56,706		47,970
Restructured loans - nonaccrual status	9,400		9,400		5,100
Interest income effect
Gross amount of interest that would have been recorded under original terms	1,158	714	1,974	1,468
Interest included in income
Nonaccrual loans	163	96	305	172
Troubled debt restructurings	169	209	395	441
Total interest included in income	332	305	700	613
Net impact on interest income	826	409	1,274	855
Commercial
Financing Receivable, Modifications [Line Items]
Average current balance	19,499	14,086	16,701	15,194
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	11	9	24	18
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	87	75	196	149
Nonaccrual loans	15,099		15,099		2,419
Total impaired loans	18,799		18,799		13,203
Interest included in income
Total interest included in income	98	84	220	167
Lease financing
Financing Receivable, Modifications [Line Items]
Average current balance	98	644	149	470
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	8	0	8
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1	1	2	1
Nonaccrual loans	94		94		195
Total impaired loans	94		94		195
Interest included in income
Total interest included in income	1	9	2	9
Construction real estate
Financing Receivable, Modifications [Line Items]
Average current balance	1,075	0	538	0
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	0	0	0	0
Nonaccrual loans	1,075		1,075		0
Total impaired loans	1,075		1,075		0
Interest included in income
Total interest included in income	0	0	0	0
Commercial real estate
Financing Receivable, Modifications [Line Items]
Average current balance	26,123	21,958	24,313	22,856
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	8	40	13	117
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	144	91	304	161
Nonaccrual loans	12,617		12,617		6,098
Total impaired loans	24,081		24,081		20,460
Interest included in income
Total interest included in income	152	131	317	278
Residential real estate
Financing Receivable, Modifications [Line Items]
Average current balance	8,731	8,875	9,217	8,915
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	6	8	13	17
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	46	49	92	95
Nonaccrual loans	4,442		4,442		5,251
Total impaired loans	8,628		8,628		9,601
Interest included in income
Total interest included in income	52	57	105	112
Installment
Financing Receivable, Modifications [Line Items]
Average current balance	357	378	413	336
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	0	0	0	0
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	1	2	3	3
Nonaccrual loans	307		307		367
Total impaired loans	325		325		437
Interest included in income
Total interest included in income	1	2	3	3
Home equity
Financing Receivable, Modifications [Line Items]
Average current balance	4,027	5,277	4,212	5,332
Impaired Financing Receivable, with Related Allowance, Interest Income, Accrual Method	1	1	2	2
Impaired Financing Receivable, with No Related Allowance, Interest Income, Accrual Method	27	21	51	42
Nonaccrual loans	2,937		2,937		3,400
Total impaired loans	3,704		3,704		4,074
Interest included in income
Total interest included in income	28	22	53	44
Credit card
Financing Receivable, Modifications [Line Items]
Nonaccrual loans	0		0		0
Loans with no related allowance recorded [member]
Financing Receivable, Modifications [Line Items]
Average current balance	55,724	41,014	48,789	42,636
Total impaired loans	51,254		51,254		37,383
Loans with no related allowance recorded [member] | Commercial
Financing Receivable, Modifications [Line Items]
Average current balance	17,198	13,022	15,607	14,154
Total impaired loans	15,315		15,315		12,134
Loans with no related allowance recorded [member] | Lease financing
Financing Receivable, Modifications [Line Items]
Average current balance	98	109	149	113
Total impaired loans	94		94		195
Loans with no related allowance recorded [member] | Construction real estate
Financing Receivable, Modifications [Line Items]
Average current balance	1,075	0	538	0
Total impaired loans	1,075		1,075		0
Loans with no related allowance recorded [member] | Commercial real estate
Financing Receivable, Modifications [Line Items]
Average current balance	25,465	14,924	19,939	15,383
Total impaired loans	23,285		23,285		12,232
Loans with no related allowance recorded [member] | Residential real estate
Financing Receivable, Modifications [Line Items]
Average current balance	7,605	7,405	8,032	7,419
Total impaired loans	7,557		7,557		8,412
Loans with no related allowance recorded [member] | Installment
Financing Receivable, Modifications [Line Items]
Average current balance	357	378	413	336
Total impaired loans	325		325		437
Loans with no related allowance recorded [member] | Home equity
Financing Receivable, Modifications [Line Items]
Average current balance	3,926	5,176	4,111	5,231
Total impaired loans	3,603		3,603		3,973
Impaired Financing Receivables With Related Allowance [Member]
Financing Receivable, Modifications [Line Items]
Total impaired loans	5,452		5,452
Impaired Financing Receivables With Related Allowance [Member] | Commercial
Financing Receivable, Modifications [Line Items]
Average current balance	2,301	1,064	1,094	1,040
Total impaired loans	3,484		3,484		1,069
Impaired Financing Receivables With Related Allowance [Member] | Lease financing
Financing Receivable, Modifications [Line Items]
Average current balance	0	535	0	357
Total impaired loans	0		0		0
Impaired Financing Receivables With Related Allowance [Member] | Construction real estate
Financing Receivable, Modifications [Line Items]
Average current balance	0	0	0	0
Total impaired loans	0		0		0
Impaired Financing Receivables With Related Allowance [Member] | Commercial real estate
Financing Receivable, Modifications [Line Items]
Average current balance	658	7,034	4,374	7,473
Total impaired loans	796		796		8,228
Impaired Financing Receivables With Related Allowance [Member] | Residential real estate
Financing Receivable, Modifications [Line Items]
Average current balance	1,126	1,470	1,185	1,496
Total impaired loans	1,071		1,071		1,189
Impaired Financing Receivables With Related Allowance [Member] | Installment
Financing Receivable, Modifications [Line Items]
Average current balance	0	0	0	0
Total impaired loans	0		0		0
Impaired Financing Receivables With Related Allowance [Member] | Home equity
Financing Receivable, Modifications [Line Items]
Average current balance	101	101	101	101
Total impaired loans	101		101		101
Impaired Financing Receivables With Related Allowance [Member]
Financing Receivable, Modifications [Line Items]
Average current balance	$ 4,186	$ 10,204	$ 6,754	$ 10,467
Total impaired loans					$ 10,587