LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance for Credit Losses on Financing Receivables By Portfolio Segments) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Allowance for loan losses:
Balance, beginning of period	$ 79,831	$ 88,170	$ 81,033	$ 91,602
Charge-offs	(6,240)	(6,871)	(9,687)	(13,754)
Recoveries	4,427	4,334	6,672	7,785
Provision (benefit) for loan losses	0	0	0	0
Balance, end of period	78,018	85,633	78,018	85,633
Commercial and Industrial [Member]
Allowance for loan losses:
Balance, beginning of period	13,871	14,168	13,401	13,572
Charge-offs	(994)	(1,010)	(2,616)	(1,686)
Recoveries	1,263	1,023	2,015	2,090
Provision (benefit) for loan losses	(409)	(215)	931	(10)
Balance, end of period	13,731	13,966	13,731	13,966
Real Estate Construction and Development [Member]
Allowance for loan losses:
Balance, beginning of period	7,086	13,003	7,407	14,434
Charge-offs	(35)	(166)	(65)	(448)
Recoveries	756	1,321	1,356	1,716
Provision (benefit) for loan losses	(1,207)	(2,746)	(2,098)	(4,290)
Balance, end of period	6,600	11,412	6,600	11,412
One-to-Four-Family Residential [Member]
Allowance for loan losses:
Balance, beginning of period	31,220	36,660	32,619	38,897
Charge-offs	(2,201)	(4,338)	(3,627)	(8,727)
Recoveries	1,478	1,288	2,269	2,519
Provision (benefit) for loan losses	(1,352)	1,656	(2,116)	2,577
Balance, end of period	29,145	35,266	29,145	35,266
Multi-family residential [Member]
Allowance for loan losses:
Balance, beginning of period	5,269	4,202	5,249	4,252
Charge-offs	(2,952)	(159)	(3,084)	(162)
Recoveries	2	141	9	141
Provision (benefit) for loan losses	5,055	(62)	5,200	(109)
Balance, end of period	7,374	4,122	7,374	4,122
Commercial Real Estate [Member]
Allowance for loan losses:
Balance, beginning of period	22,043	19,720	22,052	20,048
Charge-offs	(21)	(1,156)	(209)	(2,633)
Recoveries	915	522	972	1,240
Provision (benefit) for loan losses	(2,117)	1,487	(1,995)	1,918
Balance, end of period	20,820	20,573	20,820	20,573
Consumer and installment [Member]
Allowance for loan losses:
Balance, beginning of period	342	417	305	399
Charge-offs	(37)	(42)	(86)	(98)
Recoveries	13	39	51	79
Provision (benefit) for loan losses	30	(120)	78	(86)
Balance, end of period	$ 348	$ 294	$ 348	$ 294