LOANS AND LEASES - Investment in Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Current balance	$ 50,465		$ 50,465		$ 56,873
Contractual Principal Balance	57,445		57,445		66,066
Related Allowance	1,977		1,977		1,573
Average current balance	50,383	$ 57,849	52,443	$ 61,171
Interest income recognized	321	259	934	806
Commercial
Financing Receivable, Impaired [Line Items]
Current balance	14,799		14,799		17,411
Contractual Principal Balance	15,749		15,749		18,576
Related Allowance	777		777		357
Average current balance	14,243	10,847	15,096	10,494
Interest income recognized	91	53	258	169
Real estate - construction
Financing Receivable, Impaired [Line Items]
Current balance	0		0		0
Contractual Principal Balance	0		0		0
Related Allowance	0		0		0
Average current balance	0	151	0	187
Interest income recognized	0	0	0	0
Real estate - commercial
Financing Receivable, Impaired [Line Items]
Current balance	21,196		21,196		24,652
Contractual Principal Balance	24,289		24,289		29,185
Related Allowance	1,019		1,019		979
Average current balance	21,067	31,631	22,441	34,201
Interest income recognized	144	131	422	408
Residential - real estate
Financing Receivable, Impaired [Line Items]
Current balance	9,285		9,285		8,994
Contractual Principal Balance	10,568		10,568		10,367
Related Allowance	179		179		235
Average current balance	9,186	9,119	9,007	10,051
Interest income recognized	59	53	171	163
Home equity
Financing Receivable, Impaired [Line Items]
Current balance	4,587		4,587		5,441
Contractual Principal Balance	6,074		6,074		7,540
Related Allowance	2		2		2
Average current balance	4,736	396	5,145	5,826
Interest income recognized	24	20	68	60
Installment
Financing Receivable, Impaired [Line Items]
Current balance	384		384		253
Contractual Principal Balance	551		551		276
Related Allowance	0		0		0
Average current balance	460	5,705	348	412
Interest income recognized	2	2	5	6
Other
Financing Receivable, Impaired [Line Items]
Current balance	214		214		122
Contractual Principal Balance	214		214		122
Related Allowance	0		0		0
Average current balance	691	0	406	0
Interest income recognized	1	$ 0	10	$ 0
Loans with no related allowance recorded [member]
Financing Receivable, Impaired [Line Items]
Current balance	39,554		39,554		45,881
Contractual Principal Balance	46,534		46,534		54,521
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Commercial
Financing Receivable, Impaired [Line Items]
Current balance	13,498		13,498		16,418
Contractual Principal Balance	14,448		14,448		17,398
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Real estate - construction
Financing Receivable, Impaired [Line Items]
Current balance	0		0		0
Contractual Principal Balance	0		0		0
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Real estate - commercial
Financing Receivable, Impaired [Line Items]
Current balance	12,881		12,881		16,301
Contractual Principal Balance	15,974		15,974		20,479
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Residential - real estate
Financing Receivable, Impaired [Line Items]
Current balance	8,090		8,090		7,447
Contractual Principal Balance	9,373		9,373		8,807
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Home equity
Financing Receivable, Impaired [Line Items]
Current balance	4,487		4,487		5,340
Contractual Principal Balance	5,974		5,974		7,439
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Installment
Financing Receivable, Impaired [Line Items]
Current balance	384		384		253
Contractual Principal Balance	551		551		276
Related Allowance	0		0		0
Loans with no related allowance recorded [member] | Other
Financing Receivable, Impaired [Line Items]
Current balance	214		214		122
Contractual Principal Balance	214		214		122
Related Allowance	0		0		0
Impaired Financing Receivables With Related Allowance [Member]
Financing Receivable, Impaired [Line Items]
Current balance	10,911		10,911		10,992
Contractual Principal Balance	10,911		10,911		11,545
Related Allowance	1,977		1,977		1,573
Impaired Financing Receivables With Related Allowance [Member] | Commercial
Financing Receivable, Impaired [Line Items]
Current balance	1,301		1,301		993
Contractual Principal Balance	1,301		1,301		1,178
Related Allowance	777		777		357
Impaired Financing Receivables With Related Allowance [Member] | Real estate - construction
Financing Receivable, Impaired [Line Items]
Current balance	0		0		0
Contractual Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivables With Related Allowance [Member] | Real estate - commercial
Financing Receivable, Impaired [Line Items]
Current balance	8,315		8,315		8,351
Contractual Principal Balance	8,315		8,315		8,706
Related Allowance	1,019		1,019		979
Impaired Financing Receivables With Related Allowance [Member] | Residential - real estate
Financing Receivable, Impaired [Line Items]
Current balance	1,195		1,195		1,547
Contractual Principal Balance	1,195		1,195		1,560
Related Allowance	179		179		235
Impaired Financing Receivables With Related Allowance [Member] | Home equity
Financing Receivable, Impaired [Line Items]
Current balance	100		100		101
Contractual Principal Balance	100		100		101
Related Allowance	2		2		2
Impaired Financing Receivables With Related Allowance [Member] | Installment
Financing Receivable, Impaired [Line Items]
Current balance	0		0		0
Contractual Principal Balance	0		0		0
Related Allowance	0		0		0
Impaired Financing Receivables With Related Allowance [Member] | Other
Financing Receivable, Impaired [Line Items]
Current balance	0		0		0
Contractual Principal Balance	0		0		0
Related Allowance	$ 0		$ 0		$ 0