LOANS Allowance Roll Forward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 110,955	$ 126,640	$ 150,054
Charge-offs	(24,993)	(28,498)	(47,535)
Recoveries	5,155	4,813	9,121
Provision for loan losses	5,250	8,000	15,000
Net Charge-offs	(19,838)	(23,685)	(38,414)
Ending balance	96,367	110,955	126,640
Ending balance of allowance: individually evaluated for impairment	8,304	3,110
Ending balance of allowance: collectively evaluated for impairment	88,063	107,845
Ending balance of loans and leases: individually evaluated for impairment	57,716	56,248
Ending balance of loans and leases: collectively evaluated for impairment	5,275,552	5,170,304
Total Loan Balances	5,333,268	5,226,552
Commercial [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	46,151	55,815
Charge-offs	(14,164)	(12,209)
Recoveries	2,014	1,943
Provision for loan losses	7,287	602
Ending balance	41,288	46,151
Ending balance of allowance: individually evaluated for impairment	3,997	1,644
Ending balance of allowance: collectively evaluated for impairment	37,291	44,507
Ending balance of loans and leases: individually evaluated for impairment	15,268	26,117
Ending balance of loans and leases: collectively evaluated for impairment	2,445,396	2,469,738
Total Loan Balances	2,460,664	2,495,855
Commercial Real Estate [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	29,295	40,722
Charge-offs	(2,421)	(6,818)
Recoveries	1,142	962
Provision for loan losses	(5,363)	(5,571)
Ending balance	22,653	29,295
Ending balance of allowance: individually evaluated for impairment	2,487	406
Ending balance of allowance: collectively evaluated for impairment	20,166	28,889
Ending balance of loans and leases: individually evaluated for impairment	21,995	13,657
Ending balance of loans and leases: collectively evaluated for impairment	1,171,177	1,019,981
Total Loan Balances	1,193,172	1,033,638
Consumer [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	23,101	19,660
Charge-offs	(8,408)	(9,471)
Recoveries	1,999	1,908
Provision for loan losses	4,786	11,004
Ending balance	21,478	23,101
Ending balance of allowance: individually evaluated for impairment	1,820	1,060
Ending balance of allowance: collectively evaluated for impairment	19,658	22,041
Ending balance of loans and leases: individually evaluated for impairment	20,453	16,474
Ending balance of loans and leases: collectively evaluated for impairment	1,658,979	1,680,585
Total Loan Balances	1,679,432	1,697,059
Unallocated [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	12,408	10,443
Charge-offs	0	0
Recoveries	0	0
Provision for loan losses	(1,460)	1,965
Ending balance	10,948	12,408
Ending balance of allowance: individually evaluated for impairment	0	0
Ending balance of allowance: collectively evaluated for impairment	10,948	12,408
Ending balance of loans and leases: individually evaluated for impairment	0	0
Ending balance of loans and leases: collectively evaluated for impairment	0	0
Total Loan Balances	$ 0	$ 0