LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructuring) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Accrual Status	$ 62,438	$ 54,533
Nonaccrual Status	9,372	11,350
Total Modifications	71,810	65,883
Commerical real estate - owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	1,772	0
Nonaccrual Status	1,111	142
Total Modifications	2,883	142
Commerical real estate - investment properties [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	7,357	7,751
Nonaccrual Status	1,448	1,822
Total Modifications	8,805	9,573
Multifamily real estate [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	7,134	2,088
Nonaccrual Status	0	0
Total Modifications	7,134	2,088
One-to four-family construction [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	8,929	8,362
Nonaccrual Status	2,518	271
Total Modifications	11,447	8,633
Land and land development - residential [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	5,884	5,334
Nonaccrual Status	210	557
Total Modifications	6,094	5,891
Land and land development - commercial [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	0	0
Nonaccrual Status	0	949
Total Modifications	0	949
Commercial business [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	3,669	4,401
Nonaccrual Status	274	0
Total Modifications	3,943	4,401
One- to four-family residential [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	26,668	23,291
Nonaccrual Status	2,911	3,086
Total Modifications	29,579	26,377
Total consumer [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	1,025	3,306
Nonaccrual Status	900	4,523
Total Modifications	1,925	7,829
Consumer [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	491	2,935
Nonaccrual Status	398	3,974
Total Modifications	889	6,909
Consumer secured by one- to four-family [Member]
Financing Receivable, Modifications [Line Items]
Accrual Status	534	371
Nonaccrual Status	502	549
Total Modifications	$ 1,036	$ 920