LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Financing Receivable, Modifications [Line Items]
Accrual Status	$ 54,611	$ 57,462
Nonaccrual Status	8,819	7,966
Total Modifications	63,430	65,428
Commerical real estate - owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	187	188
Nonaccrual Status	1,287	1,551
Total Modifications	1,474	1,739
Commerical real estate - investment properties [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	7,020	7,034
Nonaccrual Status	1,486	1,514
Total Modifications	8,506	8,548
Multifamily real estate [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	7,075	7,131
Nonaccrual Status	0	0
Total Modifications	7,075	7,131
One-to four-family construction [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	6,551	6,726
Nonaccrual Status	1,143	1,044
Total Modifications	7,694	7,770
Land and land development - residential [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	4,542	4,842
Nonaccrual Status	0	15
Total Modifications	4,542	4,857
Commercial business [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	1,194	2,975
Nonaccrual Status	577	247
Total Modifications	1,771	3,222
One- to four-family residential [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	27,013	27,540
Nonaccrual Status	3,525	2,703
Total Modifications	30,538	30,243
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	485	488
Nonaccrual Status	334	396
Total Modifications	819	884
Consumer secured by one- to four-family [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	544	538
Nonaccrual Status	467	496
Total Modifications	$ 1,011	$ 1,034