LOANS, Credit Quality By Past Due Status (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Aged analysis of the company's loans [Abstract]
Total Loans	$ 4,217,244		$ 4,109,083
Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	28,644		35,689
90 + Days Past Due and Still Accruing	2,544		2,418
Nonaccrual	17,313		16,065
Total Past Due	48,501		54,172
Current	3,882,810		3,717,703
Total Loans	3,931,311		3,771,875
Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	3,132		3,522
90 + Days Past Due and Still Accruing	146		137
Nonaccrual	4,010		3,408
Total Past Due	7,288		7,067
Acquired Impaired	5,487	[1]	7,090	[1]
Current	273,158		323,051
Total Loans	285,933		337,208
Consumer Mortgage [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	1,598,298		1,582,058
Consumer Mortgage [Member] | Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	12,044		16,589
90 + Days Past Due and Still Accruing	2,074		1,253
Nonaccrual	12,228		11,097
Total Past Due	26,346		28,939
Current	1,499,800		1,473,320
Total Loans	1,526,146		1,502,259
Consumer Mortgage [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	2,303		1,857
90 + Days Past Due and Still Accruing	53		85
Nonaccrual	2,033		1,463
Total Past Due	4,389		3,405
Acquired Impaired	0	[1]	0	[1]
Current	67,763		76,394
Total Loans	72,152		79,799
Business Lending [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	1,251,178		1,260,364
Business Lending [Member] | Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	3,567		2,960
90 + Days Past Due and Still Accruing	66		164
Nonaccrual	3,005		3,083
Total Past Due	6,638		6,207
Current	1,101,014		1,079,818
Total Loans	1,107,652		1,086,025
Business Lending [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	134		531
90 + Days Past Due and Still Accruing	0		0
Nonaccrual	1,421		1,472
Total Past Due	1,555		2,003
Acquired Impaired	5,487	[1]	7,090	[1]
Current	136,484		165,246
Total Loans	143,526		174,339
Consumer Indirect [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	841,975		740,002
Consumer Indirect [Member] | Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	9,483		11,647
90 + Days Past Due and Still Accruing	115		738
Nonaccrual	11		14
Total Past Due	9,609		12,399
Current	830,786		723,878
Total Loans	840,395		736,277
Consumer Indirect [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	64		157
90 + Days Past Due and Still Accruing	0		17
Nonaccrual	0		0
Total Past Due	64		174
Acquired Impaired	0	[1]	0	[1]
Current	1,516		3,551
Total Loans	1,580		3,725
Consumer Direct [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	186,672		180,139
Consumer Direct [Member] | Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	1,201		1,858
90 + Days Past Due and Still Accruing	20		90
Nonaccrual	2		4
Total Past Due	1,223		1,952
Current	179,165		169,452
Total Loans	180,388		171,404
Consumer Direct [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	148		385
90 + Days Past Due and Still Accruing	18		27
Nonaccrual	0		0
Total Past Due	166		412
Acquired Impaired	0	[1]	0	[1]
Current	6,118		8,323
Total Loans	6,284		8,735
Home Equity [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	339,121		346,520
Home Equity [Member] | Legacy Loan [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	2,349		2,635
90 + Days Past Due and Still Accruing	269		173
Nonaccrual	2,067		1,867
Total Past Due	4,685		4,675
Current	272,045		271,235
Total Loans	276,730		275,910
Home Equity [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Past Due 30 - 89 Days	483		592
90 + Days Past Due and Still Accruing	75		8
Nonaccrual	556		473
Total Past Due	1,114		1,073
Acquired Impaired	0	[1]	0	[1]
Current	61,277		69,537
Total Loans	$ 62,391		$ 70,610

[1] Acquired impaired loans were not classified as nonperforming assets as the loans are considered to be performing under ASC 310-30. As a result interest income, through the accretion of the difference between the carrying amount of the loans and the expected cash flows, is being recognized on all acquired impaired loans.