MULTI-FAMILY MORTGAGE LOAN SECURITIZATION TRUSTS (Details 2) - Multi-Family Mortgage Loans Held in Securitization Trusts [Member]	12 Months Ended
Dec. 31, 2014
Texas [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	20.70%
California [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	12.70%
New York [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	11.10%
Washington [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	6.10%
Colorado [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	6.00%
Georgia [Member]
Variable Interest Entity [Line Items]
Concentration Risk, Percentage	5.00%

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

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