LOANS RECEIVABLE AND CREDIT QUALITY, Past Due Financing Receivbles (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014 Loan		Dec. 31, 2013 Loan
Financing Receivable, Recorded Investment, Aging [Abstract]
Number Of Loans 90 Days or More Past Due And Still Accruing Pending Refinancing	3		5
Loans 90 Days or More Past Due And Still Accruing Pending Refinancing	$ 2,604		$ 1,031
One To Four Family Residential And Cooperative Unit Allowance [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	129		143
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	82		302
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Non-accrual	1,422	[1]	1,242	[2]
Financing Receivable, Recorded Investment, Past Due, Total	1,633		1,687
Financing Receivable, Recorded Investment, Current	72,809		72,269
Loans and Leases Receivable, Other, Net of Deferred Income	74,442		73,956
Multifamily Residential and Residential Mixed Use [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0		744
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	575		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	348		1,031
Non-accrual	1,431	[1]	1,197	[2]
Financing Receivable, Recorded Investment, Past Due, Total	2,354		2,972
Financing Receivable, Recorded Investment, Current	3,159,626		2,919,578
Loans and Leases Receivable, Other, Net of Deferred Income	3,161,980		2,922,550
Mixed Use Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0		0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Non-accrual	4,400	[1]	4,400	[2]
Financing Receivable, Recorded Investment, Past Due, Total	4,400		4,400
Financing Receivable, Recorded Investment, Current	319,927		371,510
Loans and Leases Receivable, Other, Net of Deferred Income	324,327		375,910
Commercial Real Estate [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,484		404
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	2,256		0
Non-accrual	5,047	[1]	5,707	[2]
Financing Receivable, Recorded Investment, Past Due, Total	8,787		6,111
Financing Receivable, Recorded Investment, Current	403,015		318,585
Loans and Leases Receivable, Other, Net of Deferred Income	411,802		324,696
Construction Loan Receivable [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	0		0
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		0
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Non-accrual	0	[1]	0	[2]
Financing Receivable, Recorded Investment, Past Due, Total	0		0
Financing Receivable, Recorded Investment, Current	0		268
Loans and Leases Receivable, Other, Net of Deferred Income	0		268
Consumer Loan [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	4		6
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	0		4
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Non-accrual	5	[1]	3	[2]
Financing Receivable, Recorded Investment, Past Due, Total	9		13
Financing Receivable, Recorded Investment, Current	2,431		2,126
Loans and Leases Receivable, Other, Net of Deferred Income	2,440		2,139
Total Real Estate Loans [Member]
Financing Receivable, Recorded Investment, Aging [Abstract]
Financing Receivable, Recorded Investment, 30 to 59 Days Past Due	1,613		1,291
Financing Receivable, Recorded Investment, 60 to 89 Days Past Due	657		302
Financing Receivable, Recorded Investment, 90 Days Past Due and Still Accruing	2,604		1,031
Non-accrual	12,300	[1]	12,546	[2]
Financing Receivable, Recorded Investment, Past Due, Total	17,174		15,170
Financing Receivable, Recorded Investment, Current	3,955,377		3,682,210
Loans and Leases Receivable, Other, Net of Deferred Income	$ 3,972,551		$ 3,697,380

[1] Includes all loans on non-accrual status regardless of the number of days such loans were delinquent as of March 31, 2014.

[2] Includes all loans on non-accrual status regardless of the number of days such loans were delinquent as of December 31, 2013.