LOANS AND ALLOWANCE - principal balances and specific valuation allocations for impaired loans (Details 6) (Loans Receivable, USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	$ 11,822	$ 11,352
Impaired loans without a specific allowance: Unpaid Principal Balance	13,196	12,330
Impaired loans with a specific allowance: Recorded Investment	3,950	5,910
Impaired loans with a specific allowance: Unpaid Principal Balance	3,950	5,910
Impaired loans with a specific allowance: Specific Allowance	583	1,432
Impaired Financing Receivable, Recorded Investment	15,772	17,262
Impaired Financing Receivable, Unpaid Principal Balance	17,146	18,240
Total impaired loans: Specific Allowance	583	1,432
Construction
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment
Impaired loans without a specific allowance: Unpaid Principal Balance
Impaired loans with a specific allowance: Recorded Investment
Impaired loans with a specific allowance: Unpaid Principal Balance
Impaired loans with a specific allowance: Specific Allowance
Impaired Financing Receivable, Recorded Investment
Impaired Financing Receivable, Unpaid Principal Balance
Total impaired loans: Specific Allowance
One-to-four family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	2,301	3,064
Impaired loans without a specific allowance: Unpaid Principal Balance	2,511	3,249
Impaired loans with a specific allowance: Recorded Investment	954	3,267
Impaired loans with a specific allowance: Unpaid Principal Balance	954	3,267
Impaired loans with a specific allowance: Specific Allowance	191	913
Impaired Financing Receivable, Recorded Investment	3,255	6,331
Impaired Financing Receivable, Unpaid Principal Balance	3,465	6,516
Total impaired loans: Specific Allowance	191	913
Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	2,011	1,966
Impaired loans without a specific allowance: Unpaid Principal Balance	2,011	1,966
Impaired loans with a specific allowance: Recorded Investment	1,075
Impaired loans with a specific allowance: Unpaid Principal Balance	1,075
Impaired loans with a specific allowance: Specific Allowance	196
Impaired Financing Receivable, Recorded Investment	3,086	1,966
Impaired Financing Receivable, Unpaid Principal Balance	3,086	1,966
Total impaired loans: Specific Allowance	196
Nonresidential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	4,224	3,705
Impaired loans without a specific allowance: Unpaid Principal Balance	5,018	4,469
Impaired loans with a specific allowance: Recorded Investment
Impaired loans with a specific allowance: Unpaid Principal Balance
Impaired loans with a specific allowance: Specific Allowance
Impaired Financing Receivable, Recorded Investment	4,224	3,705
Impaired Financing Receivable, Unpaid Principal Balance	5,018	4,469
Total impaired loans: Specific Allowance
Land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	2,863	2,329
Impaired loans without a specific allowance: Unpaid Principal Balance	3,204	2,329
Impaired loans with a specific allowance: Recorded Investment	1,921	2,643
Impaired loans with a specific allowance: Unpaid Principal Balance	1,921	2,643
Impaired loans with a specific allowance: Specific Allowance	196	519
Impaired Financing Receivable, Recorded Investment	4,784	4,972
Impaired Financing Receivable, Unpaid Principal Balance	5,125	4,972
Total impaired loans: Specific Allowance	196	519
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	408	271
Impaired loans without a specific allowance: Unpaid Principal Balance	437	300
Impaired loans with a specific allowance: Recorded Investment
Impaired loans with a specific allowance: Unpaid Principal Balance
Impaired loans with a specific allowance: Specific Allowance
Impaired Financing Receivable, Recorded Investment	408	271
Impaired Financing Receivable, Unpaid Principal Balance	437	300
Total impaired loans: Specific Allowance
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Impaired loans without a specific allowance: Recorded Investment	15	17
Impaired loans without a specific allowance: Unpaid Principal Balance	15	17
Impaired loans with a specific allowance: Recorded Investment
Impaired loans with a specific allowance: Unpaid Principal Balance
Impaired loans with a specific allowance: Specific Allowance
Impaired Financing Receivable, Recorded Investment	15	17
Impaired Financing Receivable, Unpaid Principal Balance	15	17
Total impaired loans: Specific Allowance