LOANS, Amount of Business Lending Loans by Credit Quality Category (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 4,147,803	$ 4,109,083
Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,247,129	1,260,364
Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	3,842,244	3,771,875
Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,091,054	1,086,025
Legacy Loan [Member] | All Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,751,190	2,685,850
Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	305,559	337,208
Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	156,075	174,339
Acquired Loans [Member] | All Other Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	149,484	162,869
Pass [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,014,797	1,025,156
Pass [Member] | Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	910,318	908,885
Pass [Member] | Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	104,479	116,271
Special Mention [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	122,447	117,864
Special Mention [Member] | Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	102,219	93,600
Special Mention [Member] | Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	20,228	24,264
Classified [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	104,286	110,093
Classified [Member] | Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	78,517	83,379
Classified [Member] | Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	25,769	26,714
Doubtful [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	161
Doubtful [Member] | Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	161
Doubtful [Member] | Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Impaired [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,599	7,090
Acquired Impaired [Member] | Legacy Loan [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	0
Acquired Impaired [Member] | Acquired Loans [Member] | Business Lending [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	5,599	7,090
Performing [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,735,597	2,670,614
Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	146,942	160,796
Nonperforming [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	15,593	15,236
Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,542	2,073
Consumer Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,580,584	1,582,058
Consumer Mortgage [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,505,758	1,502,259
Consumer Mortgage [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	74,826	79,799
Consumer Mortgage [Member] | Performing [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,492,447	1,489,909
Consumer Mortgage [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	72,849	78,251
Consumer Mortgage [Member] | Nonperforming [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	13,311	12,350
Consumer Mortgage [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1,977	1,548
Consumer Indirect [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	797,297	740,002
Consumer Indirect [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	795,167	736,277
Consumer Indirect [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,130	3,725
Consumer Indirect [Member] | Performing [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	795,002	735,525
Consumer Indirect [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,129	3,708
Consumer Indirect [Member] | Nonperforming [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	165	752
Consumer Indirect [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	1	17
Consumer Direct [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	183,448	180,139
Consumer Direct [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	176,577	171,404
Consumer Direct [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,871	8,735
Consumer Direct [Member] | Performing [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	176,545	171,310
Consumer Direct [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	6,871	8,708
Consumer Direct [Member] | Nonperforming [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	32	94
Consumer Direct [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	0	27
Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	339,345	346,520
Home Equity [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	273,688	275,910
Home Equity [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	65,657	70,610
Home Equity [Member] | Performing [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	271,603	273,870
Home Equity [Member] | Performing [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	65,093	70,129
Home Equity [Member] | Nonperforming [Member] | Legacy Loan [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	2,085	2,040
Home Equity [Member] | Nonperforming [Member] | Acquired Loans [Member]
Financing Receivable, Recorded Investment [Line Items]
Loans	$ 564	$ 481