Note 6 - Consolidated K-Series (Details) - Condensed Balance Sheet of Consolidated K-Series (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Assets
Multi-family loans held in securitization trusts	$ 152,902		$ 163,237
Total Assets	10,052,252	[1]	9,898,675	[1]
Liabilities and Equity
Total Liabilities	9,343,875	[1]	9,418,009	[1]
Equity(1)	708,377		480,666
Total Liabilities and Equity	10,052,252		9,898,675
Consolidated K-Series [Member]
Assets
Multi-family loans held in securitization trusts	8,303,169		8,111,022
Receivables	29,133		30,222
Total Assets	8,332,302		8,141,244
Liabilities and Equity
Multi-family CDOs	8,005,013		7,871,020
Accrued expenses	28,684		29,766
Total Liabilities	8,033,697		7,900,786
Equity(1)	298,605		240,458
Total Liabilities and Equity	$ 8,332,302		$ 8,141,244

[1] Our consolidated balance sheets include assets and liabilities of consolidated variable interest entities ("VIEs") as the Company is the primary beneficiary of these VIEs. As of June 30, 2014 and December 31, 2013, assets of consolidated VIEs totaled $8,942,214 and $8,665,829, respectively, and the liabilities of consolidated VIEs totaled $8,589,402 and $8,365,345, respectively. See Note 7 for further discussion.