Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - VIEs (Details)

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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - VIEs (Details) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Variable Interest Entity [Line Items]    
Real estate securities, available-for-sale - Note 5 $ 1,950 $ 59,034
Subprime mortgage loans subject to call option 0 380,806
Restricted cash 6,404 4,469
Receivables and other assets 38,017 38,546
Total Assets 1,171,958 1,467,982
CDO bonds payable 0 92,933
Other bonds and notes payable 0 16,162
Financing of subprime mortgage loans subject to call option 0 380,806
Accounts payable, accrued expenses and other liabilities 88,437 88,939
Total Liabilities $ 953,891 1,257,860
VIEs    
Variable Interest Entity [Line Items]    
Real estate securities, available-for-sale - Note 5   46,392
Subprime mortgage loans subject to call option   380,806
Restricted cash   128
Receivables and other assets   77
Total Assets   427,403
CDO bonds payable   92,933
Other bonds and notes payable   4,672
Financing of subprime mortgage loans subject to call option   380,806
Accounts payable, accrued expenses and other liabilities   29
Total Liabilities   $ 478,440