LOANS RECEIVABLE AND OTHER INVESTMENTS - Narrative (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2016 USD ($) loan	Sep. 30, 2016 USD ($) loan	Dec. 31, 2015 USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Proceeds from collection of loans receivable and interest received		$ 196,100
Proceeds from collection of loans receivable		170,800
Proceeds from interest received		25,300
Loan loss reserve	$ 3,120	$ 3,120	$ 4,300
Loan Receivable Investment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loan receivable investments, nonaccrual status | loan	3	3
Loans receivable, nonaccrual status	$ 18,400	$ 18,400	$ 30,000
Loan loss reserve in period	200	3,500
Loan loss reserve	2,700	2,700
Portfolio-Based Loan Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan loss reserve in period	50	(1,400)
Loan loss reserve	$ 400	$ 400