LOANS Delinquency(Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	$ 21,579	$ 16,595
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	4,390	5,426
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	3,466	2,027
Total Past Due and Still Accruing	29,435	24,048
Accruing Current Balance	5,258,957	5,156,958
Non-accrual Balances	44,876	45,546
Total Loan Balances	5,333,268	5,226,552
Percent total loans and leases 30 to 59 days past due and still accruing	0.40%	0.32%
Percent total loans and leases 60 to 89 days past due still accruing	0.08%	0.10%
Percent of total loans and leases, 90 days or more past due and still accruing	0.07%	0.04%
Percent of total loans and leases, total past due and still accruing	0.55%	0.46%
Percent total loans and leases non accrual balances	0.84%	0.87%
Commercial and Industrial [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	3,362	4,026
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	1,520	1,685
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	11	32
Total Past Due and Still Accruing	4,893	5,743
Accruing Current Balance	2,440,836	2,465,459
Non-accrual Balances	14,935	24,653
Total Loan Balances	2,460,664	2,495,855
Troubled debt restructurings included in non accrual balances	7,700	20,600
CRE - Permanent [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	6,191	1,333
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	181	330
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	3
Total Past Due and Still Accruing	6,372	1,666
Accruing Current Balance	984,208	903,110
Non-accrual Balances	4,258	2,984
Total Loan Balances	994,838	907,760
CRE - Construction [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	373	651
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0	485
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	0
Total Past Due and Still Accruing	373	1,136
Accruing Current Balance	185,833	119,296
Non-accrual Balances	12,128	5,446
Total Loan Balances	198,334	125,878
Commercial Real Estate [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	6,564	1,984
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	181	815
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0	3
Total Past Due and Still Accruing	6,745	2,802
Accruing Current Balance	1,170,041	1,022,406
Non-accrual Balances	16,386	8,430
Total Loan Balances	1,193,172	1,033,638
Troubled debt restructurings included in non accrual balances	6,500	5,000
Residential Mortgages [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	4,509	3,826
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	774	394
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	2,197	38
Total Past Due and Still Accruing	7,480	4,258
Accruing Current Balance	637,708	660,448
Non-accrual Balances	7,037	7,066
Total Loan Balances	652,225	671,772
Home Equity [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	4,383	3,705
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	1,101	1,818
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	140	666
Total Past Due and Still Accruing	5,624	6,189
Accruing Current Balance	752,197	744,505
Non-accrual Balances	4,787	3,692
Total Loan Balances	762,608	754,386
All Other Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	2,761	3,054
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	814	714
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	1,118	1,288
Total Past Due and Still Accruing	4,693	5,056
Accruing Current Balance	258,175	264,140
Non-accrual Balances	1,731	1,705
Total Loan Balances	264,599	270,901
Consumer [Member]
Financing Receivable, Past Due [Line Items]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	11,653	10,585
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	2,689	2,926
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	3,455	1,992
Total Past Due and Still Accruing	17,797	15,503
Accruing Current Balance	1,648,080	1,669,093
Non-accrual Balances	13,555	12,463
Total Loan Balances	1,679,432	1,697,059
Troubled debt restructurings included in non accrual balances	$ 3,000