LOANS AND ALLOWANCE FOR LOAN LOSSES (Allowance For Credit Losses On Financing Receivables By Portfolio Segments) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Allowance for loan losses:
Balance, beginning of year	$ 137,710	$ 201,033	$ 266,448
Charge-offs	(78,070)	(154,627)	(331,196)
Recoveries	29,962	22,304	52,102
Provision (benefit) for loan losses	2,000	69,000	214,000
Balance, end of year	91,602	137,710	201,033
Commercial and Industrial
Allowance for loan losses:
Balance, beginning of year	27,243	28,000
Charge-offs	(17,410)	(46,256)
Recoveries	12,886	6,962
Provision (benefit) for loan losses	(9,147)	38,537
Balance, end of year	13,572	27,243
Real Estate Construction and Development
Allowance for loan losses:
Balance, beginning of year	24,868	58,439
Charge-offs	(12,244)	(35,459)
Recoveries	5,659	6,694
Provision (benefit) for loan losses	(3,849)	(4,806)
Balance, end of year	14,434	24,868
One-to- Four-Family Residential
Allowance for loan losses:
Balance, beginning of year	50,864	60,762
Charge-offs	(21,814)	(31,355)
Recoveries	5,188	3,985
Provision (benefit) for loan losses	4,659	17,472
Balance, end of year	38,897	50,864
Multi- Family Residential
Allowance for loan losses:
Balance, beginning of year	4,851	5,158
Charge-offs	(2,435)	(3,126)
Recoveries	44	562
Provision (benefit) for loan losses	1,792	2,257
Balance, end of year	4,252	4,851
Commercial Real Estate
Allowance for loan losses:
Balance, beginning of year	29,448	47,880
Charge-offs	(23,856)	(37,974)
Recoveries	5,982	3,787
Provision (benefit) for loan losses	8,474	15,755
Balance, end of year	20,048	29,448
Consumer and Installment
Allowance for loan losses:
Balance, beginning of year	436	794
Charge-offs	(311)	(457)
Recoveries	203	314
Provision (benefit) for loan losses	71	(215)
Balance, end of year	$ 399	$ 436