LOANS RECEIVABLE AND THE ALLOWANCE FOR LOAN LOSSES (Troubled Debt Restructuring) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	$ 23,981	$ 29,154
TDRs on Nonaccrual Status	2,117	2,349
Total TDRs	26,098	31,503
Commitments to advance funds related to TDRs, maximum additional amounts	284	2,095
Commerical real estate - owner-occupied [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	182	183
TDRs on Nonaccrual Status	104	109
Total TDRs	286	292
Commerical real estate - investment properties [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	5,871	6,021
TDRs on Nonaccrual Status	13	32
Total TDRs	5,884	6,053
Multifamily real estate [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	361	786
TDRs on Nonaccrual Status	0	0
Total TDRs	361	786
One- to four-family construction [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	2,582	3,923
TDRs on Nonaccrual Status	0	0
Total TDRs	2,582	3,923
Land and land development - residential [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	1,153	1,279
TDRs on Nonaccrual Status	493	525
Total TDRs	1,646	1,804
Commercial business [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	643	739
TDRs on Nonaccrual Status	0	87
Total TDRs	643	826
Agricultural business, including secured by farmland [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	776
TDRs on Nonaccrual Status	0
Total TDRs	776
One- to four-family residential [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	12,090	15,793
TDRs on Nonaccrual Status	1,451	1,363
Total TDRs	13,541	17,156
Consumer secured by one- to four-family [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	147	233
TDRs on Nonaccrual Status	56	117
Total TDRs	203	350
Consumer - other [Member]
Financing Receivable, Modifications [Line Items]
TDRs on Accrual Status	176	197
TDRs on Nonaccrual Status	0	116
Total TDRs	$ 176	$ 313