LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance for Credit Losses on Financing Receivables By Portfolio Segments) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Allowance for loan losses:
Balance, beginning of period	$ 64,142	$ 79,831	$ 66,874	$ 81,033
Charge-offs	(2,351)	(6,240)	(7,095)	(9,687)
Recoveries	4,525	4,427	6,537	6,672
Provision (benefit) for loan losses	(7,500)	0	(7,500)	0
Balance, end of period	58,816	78,018	58,816	78,018
Commercial and Industrial [Member]
Allowance for loan losses:
Balance, beginning of period	12,332	13,871	12,574	13,401
Charge-offs	(1,117)	(994)	(4,104)	(2,616)
Recoveries	1,181	1,263	2,425	2,015
Provision (benefit) for loan losses	(1,075)	(409)	426	931
Balance, end of period	11,321	13,731	11,321	13,731
Real Estate Construction and Development [Member]
Allowance for loan losses:
Balance, beginning of period	2,754	7,086	3,490	7,407
Charge-offs	(138)	(35)	(178)	(65)
Recoveries	138	756	302	1,356
Provision (benefit) for loan losses	(523)	(1,207)	(1,383)	(2,098)
Balance, end of period	2,231	6,600	2,231	6,600
One-to-Four-Family Residential [Member]
Allowance for loan losses:
Balance, beginning of period	22,486	31,220	24,055	32,619
Charge-offs	(564)	(2,201)	(1,727)	(3,627)
Recoveries	913	1,478	1,413	2,269
Provision (benefit) for loan losses	(432)	(1,352)	(1,338)	(2,116)
Balance, end of period	22,403	29,145	22,403	29,145
Multi-family residential [Member]
Allowance for loan losses:
Balance, beginning of period	5,574	5,269	5,630	5,249
Charge-offs	(9)	(2,952)	(198)	(3,084)
Recoveries	2,177	2	2,233	9
Provision (benefit) for loan losses	(4,312)	5,055	(4,235)	5,200
Balance, end of period	3,430	7,374	3,430	7,374
Commercial Real Estate [Member]
Allowance for loan losses:
Balance, beginning of period	20,886	22,043	20,983	22,052
Charge-offs	(502)	(21)	(845)	(209)
Recoveries	100	915	121	972
Provision (benefit) for loan losses	(1,135)	(2,117)	(910)	(1,995)
Balance, end of period	19,349	20,820	19,349	20,820
Consumer and installment [Member]
Allowance for loan losses:
Balance, beginning of period	110	342	142	305
Charge-offs	(21)	(37)	(43)	(86)
Recoveries	16	13	43	51
Provision (benefit) for loan losses	(23)	30	(60)	78
Balance, end of period	$ 82	$ 348	$ 82	$ 348