DERIVATIVES (Offsetting of Financial Liabilities) (Details) (USD $)	Jun. 30, 2014		Dec. 31, 2013
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	$ 318,612,000		$ 273,705,000
Gross Amounts Offset in the Statement of Financial Position	31,084,000		34,394,000
Net Amounts of Liabilities Presented in the Statement of Financial Position	287,528,000		239,311,000
Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	83,264,000		137,283,000
Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Pledged	181,336,000		79,666,000
Net Amount, Subject to Master Netting Arrangement or Similar Arrangement	22,928,000		22,362,000
Derivative Liability, Not Subject to Master Netting Arrangement	139,000	[1]	0	[1]
Gross Amounts of Recognized Liabilities, Including Derivatives Not Subject to Master Netting Arrangement	318,751,000		273,705,000
Net Amounts of Liabilities Presented in the Statement of Financial Position, Total Derivatives Liabilities	287,667,000		239,311,000
Net Amount, Total Derivatives Liabilities	23,067,000		22,362,000
Gross Amounts of Recognized Liabilities, Total Financial Liabilities	318,751,000		273,705,000
Gross Amounts Offset in the Statement of Financial Position, Total Financial Liabilities	31,084,000		34,394,000
Net Amounts of Liabilities Presented in the Statement of Financial Position, Total Financial Liabilities	287,667,000		239,311,000
Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments, Total Financial Liabilities	83,264,000		137,283,000
Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Pledged, Total Financial Liabilities	181,336,000		79,666,000
Net Amount, Total Financial Liabilities	23,067,000		22,362,000
Other derivative activities [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	247,788,000	[2]	213,400,000	[2]
Gross Amounts Offset in the Statement of Financial Position	31,084,000	[2]	34,394,000	[2]
Net Amounts of Liabilities Presented in the Statement of Financial Position	216,704,000	[2]	179,006,000	[2]
Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	58,018,000	[2]	102,402,000	[2]
Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Pledged	143,688,000	[2]	37,538,000	[2]
Net Amount, Subject to Master Netting Arrangement or Similar Arrangement	14,998,000	[2]	39,066,000	[2]
Fair value hedges [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	2,303,000		1,924,000
Gross Amounts Offset in the Statement of Financial Position	0		0
Net Amounts of Liabilities Presented in the Statement of Financial Position	2,303,000		1,924,000
Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	0		0
Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Pledged	703,000		1,311,000
Net Amount, Subject to Master Netting Arrangement or Similar Arrangement	1,600,000		613,000
Cash flow hedges [Member]
Offsetting Liabilities [Line Items]
Gross Amounts of Recognized Liabilities	68,521,000		58,381,000
Gross Amounts Offset in the Statement of Financial Position	0		0
Net Amounts of Liabilities Presented in the Statement of Financial Position	68,521,000		58,381,000
Gross Amounts Not Offset in the Statement of Financial Position - Financial Instruments	25,246,000		34,881,000
Gross Amounts Not Offset in the Statement of Financial Position - Cash Collateral Pledged	36,945,000		40,817,000
Net Amount, Subject to Master Netting Arrangement or Similar Arrangement	$ 6,330,000		$ (17,317,000)

[1] Includes mortgage banking derivatives

[2] Includes customer-related and other derivatives