ALLOWANCE FOR LOAN LOSSES AND RESERVE FOR FIRST LOSS POSITION, Summary of Impaired Real Estate Loans (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	$ 11,876		$ 39,162
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	19,797		15,534
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	10,535	[1]	37,656	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	19,654	[1]	15,488	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	1,771		520
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	27,920		38,179		35,579
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	16,259		21,151		21,118
Impaired Financing Receivable, with No Related Allowance, Interest Income	1,505		2,145		1,658
Impaired Financing Receivable, with Related Allowance, Interest Income	871		765		996
One-to Four-Family Residential and Cooperative Unit [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	1,066		1,079
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	255		258
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	987	[1]	1,079	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	212	[1]	212	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		7
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,010		867		1,406
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	211		452		565
Impaired Financing Receivable, with No Related Allowance, Interest Income	42		55		38
Impaired Financing Receivable, with Related Allowance, Interest Income	14		19		31
Multifamily Residential And Residential Mixed Use Allowance [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	2,494		2,767
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	2,345	[1]	2,460	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	[1]	0	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	2,851		5,434		11,194
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		420		3,040
Impaired Financing Receivable, with No Related Allowance, Interest Income	163		341		795
Impaired Financing Receivable, with Related Allowance, Interest Income	0		0		86
Mixed Use Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		1,900
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	4,500		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	[1]	1,900	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	4,400	[1]	0	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	1,320		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	1,272		2,516		3,901
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	880		192		1,893
Impaired Financing Receivable, with No Related Allowance, Interest Income	200		74		191
Impaired Financing Receivable, with Related Allowance, Interest Income	0		0		11
Commercial Real Estate [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	8,316		33,416
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	15,042		15,276
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	7,203	[1]	32,217	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	15,042	[1]	15,276	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	451		513
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	22,787		29,362		15,243
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	15,168		20,087		15,620
Impaired Financing Receivable, with No Related Allowance, Interest Income	1,100		1,675		407
Impaired Financing Receivable, with Related Allowance, Interest Income	857		746		868
Construction [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, with No Related Allowance, Unpaid Principal Balance	0		0
Impaired Financing Receivable, with Related Allowance, Unpaid Principal Balance	0		0
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	0	[1]	0	[1]
Impaired Financing Receivable, with Related Allowance, Recorded Investment	0	[1]	0	[1]
Impaired Financing Receivable, with No Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with Allocated Reserves Within Allowance For Loan Losses Recognized For Impaired Receivables	0		0
Impaired Financing Receivable, with No Related Allowance, Average Recorded Investment	0		0		3,835
Impaired Financing Receivable, with Related Allowance, Average Recorded Investment	0		0		0
Impaired Financing Receivable, with No Related Allowance, Interest Income	0		0		227
Impaired Financing Receivable, with Related Allowance, Interest Income	$ 0		$ 0		$ 0

[1] The recorded investment excludes accrued interest receivable and loan origination fees, net, due to immateriality.