OTHER INVESTMENTS (Note Due 2023 Narrative) (Detail) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	May 31, 2018	Dec. 31, 2018	Dec. 31, 2017	May 17, 2017	Feb. 26, 2016	Jun. 30, 2015
Schedule of Investments [Line Items]
Other investments, gross		$ 504,626	$ 276,715
Other Investment Note Due 2023 [Member]
Schedule of Investments [Line Items]
Other investments, gross		$ 59,500
Other Investment Note Due 2023 [Member] | Revolving Credit Facility
Schedule of Investments [Line Items]
Other investments, gross				$ 15,000		$ 50,000
Interest rate				9.50%		6.66%
Other Investment Note Due 2023 [Member] | Mezzanine Loan [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount					$ 50,000
Notes Receivable, Discount					$ 750
Loan increase (decrease)	$ 10,000
Loans Receivable Fixed Rate		12.00%
Investment Maturity Date		May 31, 2023
Notes Receivable Principal Payment	2,500
Notes Receivable, Fees Revenue	1,100
Notes Receivable, Fees Revenue Cash Received At Closing	$ 500
6.66% Interest rate notes mature on 2023
Schedule of Investments [Line Items]
Remaining outstanding amount of loan		$ 50,000
9.5% Interest rate notes mature on 2023
Schedule of Investments [Line Items]
Remaining outstanding amount of loan		$ 15,000