SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
TOTAL ASSETS	$ 8,591,848	$ 8,529,522
Total deposits	6,072,578	5,935,565
Net interest income (expense)	252,062	254,006	259,903
Total non-interest income	98,067	95,968	93,843
Total non-interest expense	281,911	210,310	226,030
Net income (loss)	53,387	98,910	84,401
Consolidated Entities [Member]
Segment Reporting Information [Line Items]
TOTAL ASSETS	8,591,848	8,529,522	8,486,281
Total deposits	6,072,578	5,935,565	5,874,819
Net interest income (expense)	252,062	254,006	259,903
Total non-interest income	98,067	95,968	93,843
Total non-interest expense	281,911	210,310	226,030
Net income (loss)	53,387	98,910	84,401
Community Banking [Member]
Segment Reporting Information [Line Items]
TOTAL ASSETS	8,551,806	8,485,482	8,431,175
Total deposits	6,072,578	5,935,565	5,874,819
Net interest income (expense)	255,030	261,098	268,161
Total non-interest income	52,968	53,784	54,502
Total non-interest expense	244,906	173,507	192,280
Net income (loss)	50,840	100,624	95,081
Other [Member]
Segment Reporting Information [Line Items]
TOTAL ASSETS	40,042	44,040	55,106
Total deposits	0	0	0
Net interest income (expense)	(2,968)	(7,092)	(8,258)
Total non-interest income	45,099	42,184	39,341
Total non-interest expense	37,005	36,803	33,750
Net income (loss)	$ 2,547	$ (1,714)	$ (10,680)