LOANS, Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Allowance for loan losses [Roll Forward]
Beginning balance	$ 45,596	$ 45,005	$ 45,401	$ 45,341
Charge-offs	(2,966)	(2,288)	(5,638)	(4,702)
Recoveries	1,591	1,974	3,117	3,429
Provision	2,305	591	3,646	1,214
Ending balance	46,526	45,282	46,526	45,282
Acquired Impaired [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	85	196	168	173
Charge-offs	(26)	(43)	(26)	(43)
Recoveries	0	0	0	0
Provision	80	(60)	(3)	(37)
Ending balance	139	93	139	93
Residential Portfolio Segment [Member] \| Consumer Mortgage [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	10,148	10,233	10,198	10,286
Charge-offs	(156)	(199)	(243)	(642)
Recoveries	38	45	83	66
Provision	(177)	113	(185)	482
Ending balance	9,853	10,192	9,853	10,192
Commercial Portfolio Segment [Member] \| Business Lending [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	16,695	15,405	15,749	15,787
Charge-offs	(770)	(299)	(979)	(433)
Recoveries	156	527	291	608
Provision	868	(280)	1,888	(609)
Ending balance	16,949	15,353	16,949	15,353
Consumer Portfolio Segment [Member] \| Consumer Indirect [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	12,334	11,246	12,422	11,544
Charge-offs	(1,545)	(1,397)	(3,401)	(2,823)
Recoveries	1,140	1,184	2,255	2,337
Provision	1,286	569	1,939	544
Ending balance	13,215	11,602	13,215	11,602
Consumer Portfolio Segment [Member] \| Consumer Direct [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	2,875	2,879	2,997	3,083
Charge-offs	(389)	(294)	(852)	(639)
Recoveries	238	199	460	392
Provision	296	207	415	155
Ending balance	3,020	2,991	3,020	2,991
Consumer Portfolio Segment [Member] \| Home Equity [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	2,580	2,663	2,666	2,701
Charge-offs	(80)	(56)	(137)	(122)
Recoveries	19	19	28	26
Provision	(19)	51	(57)	72
Ending balance	2,500	2,677	2,500	2,677
Unallocated Financing Receivables [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	879	2,383	1,201	1,767
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Provision	(29)	(9)	(351)	607
Ending balance	$ 850	$ 2,374	$ 850	$ 2,374

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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- Definition

Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

+ References

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- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (g)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of expense related to estimated loss from loan and lease transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 225
-Section S99
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