LOANS, Credit Quality By Past Due Status (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Aged analysis of the company's loans [Abstract]
Total Loans		$ 4,263,603	$ 4,236,206
Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		18,558	17,676
Total Past Due		41,676	54,940
Current		3,969,717	3,908,458
Total Loans		4,011,393	3,963,398
Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		21,655	34,436
Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		1,463	2,828
Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		2,882	3,055
Total Past Due		4,762	6,721
Current		242,310	260,775
Total Loans		252,210	272,808
Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,785	3,388
Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		95	278
Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	5,138	5,312
Consumer Mortgage [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,544,446	1,544,401
Consumer Mortgage [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		63,618	68,983
Business Lending [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,295,889	1,262,484
Business Lending [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,167,557	1,124,594
Business Lending [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		128,332	137,890
Consumer Indirect [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		836,732	832,745
Consumer Indirect [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		717	1,223
Consumer Direct [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		177,243	178,585
Consumer Direct [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		4,380	5,443
Home Equity [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		285,415	283,073
Home Equity [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		55,163	59,269
Residential Portfolio Segment [Member] | Consumer Mortgage [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,608,064	1,613,384
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		13,346	13,201
Total Past Due		23,435	29,344
Current		1,521,011	1,515,057
Total Loans		1,544,446	1,544,401
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		9,091	13,978
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		998	2,165
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		1,759	2,122
Total Past Due		3,043	4,246
Current		60,575	64,737
Total Loans		63,618	68,983
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,224	1,892
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		60	232
Residential Portfolio Segment [Member] | Consumer Mortgage [Member] | Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	0	0
Commercial Portfolio Segment [Member] | Business Lending [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		1,295,889	1,262,484
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		3,113	2,291
Total Past Due		5,307	9,379
Current		1,162,250	1,115,215
Total Loans		1,167,557	1,124,594
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,929	6,738
Commercial Portfolio Segment [Member] | Business Lending [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		265	350
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		718	489
Total Past Due		819	1,097
Current		122,375	131,481
Total Loans		128,332	137,890
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		101	608
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Commercial Portfolio Segment [Member] | Business Lending [Member] | Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	5,138	5,312
Consumer Portfolio Segment [Member] | Consumer Indirect [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		837,449	833,968
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		0	10
Total Past Due		8,562	10,621
Current		828,170	822,124
Total Loans		836,732	832,745
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		8,536	10,529
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		26	82
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		0	0
Total Past Due		21	40
Current		696	1,183
Total Loans		717	1,223
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		21	40
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Consumer Portfolio Segment [Member] | Consumer Indirect [Member] | Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	0	0
Consumer Portfolio Segment [Member] | Consumer Direct [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		181,623	184,028
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		1	2
Total Past Due		973	1,427
Current		176,270	177,158
Total Loans		177,243	178,585
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		964	1,389
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		8	36
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		18	18
Total Past Due		88	192
Current		4,292	5,251
Total Loans		4,380	5,443
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		70	174
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		0	0
Consumer Portfolio Segment [Member] | Consumer Direct [Member] | Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	0	0
Consumer Portfolio Segment [Member] | Home Equity [Member]
Aged analysis of the company's loans [Abstract]
Total Loans		340,578	342,342
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		2,098	2,172
Total Past Due		3,399	4,169
Current		282,016	278,904
Total Loans		285,415	283,073
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		1,135	1,802
Consumer Portfolio Segment [Member] | Home Equity [Member] | Legacy Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		166	195
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member]
Aged analysis of the company's loans [Abstract]
Nonaccrual		387	426
Total Past Due		791	1,146
Current		54,372	58,123
Total Loans		55,163	59,269
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member] | Past Due 30 - 89 Days [Member]
Aged analysis of the company's loans [Abstract]
Total Past Due		369	674
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Loans [Member] | 90+ Days Past Due [Member]
Aged analysis of the company's loans [Abstract]
90 + Days Past Due and Still Accruing		35	46
Consumer Portfolio Segment [Member] | Home Equity [Member] | Acquired Impaired [Member]
Aged analysis of the company's loans [Abstract]
Total Loans	[1]	$ 0	$ 0

[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 cashflows, is being recognized on all acquired impaired loans.