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LOANS RECEIVABLE (Details) (USD $)
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1 Months Ended | 6 Months Ended | 6 Months Ended | 1 Months Ended | 1 Months Ended | ||||||
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May 31, 2013
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Jun. 30, 2013
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Jun. 30, 2012
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Dec. 31, 2012
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Jun. 30, 2013
Secured Loans Receivable
loan
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Dec. 31, 2012
Eight Percent Loan Receivable Maturing in 2017 [Member]
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Jul. 25, 2013
Eight Percent Loan Receivable Maturing in 2017 [Member]
Subsequent Event
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Jul. 31, 2013
Eight Percent Loan Receivable Maturing in 2017 [Member]
Subsequent Event
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Jul. 31, 2013
Senior Secured Portion Sold Eight Percent Loan Receivable Maturing in 2017 [Member]
Subsequent Event
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May 31, 2013
Twelve Percent Loan Receivable Maturing in 2017 [Member]
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Dec. 31, 2012
Twelve Percent Loan Receivable Maturing in 2017 [Member]
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| Accounts, Notes, Loans and Financing Receivable [Line Items] | |||||||||||
| Proceeds from loans receivable | $ 218,043,000 | $ 33,223,000 | $ 68,400,000 | ||||||||
| Number of secured loans repaid | 4 | ||||||||||
| Payments to Acquire Mortgage Backed Securities (MBS) categorized as Available-for-sale | 21,000,000 | ||||||||||
| Available-for-sale Securities, Amortized Cost Basis | 21,100,000 | ||||||||||
| Secured loans receivable, net | 514,500,000 | 697,100,000 | |||||||||
| Loans receivable, aggregate principal amount | 375,000,000 | 183,000,000 | 50,000,000 | ||||||||
| Loans receivable, interest rate | 8.00% | 9.40% | 4.50% | 12.00% | |||||||
| Proceeds from Sale of Loans Receivable | $ 66,400,000 | $ 25,000,000 | |||||||||