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OTHER INVESTMENTS (Note Due 2024-2025 Narrative) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	May 07, 2018	Dec. 31, 2017	Aug. 31, 2017	Sep. 30, 2016
Schedule of Investments [Line Items]
Other investments, gross	$ 504,626		$ 276,715
Other Investment Note Due 2024 Through 2025 [Member]
Schedule of Investments [Line Items]
Debt instrument, interest rate, stated percentage	8.38%
Other investments, gross	$ 46,287		$ 31,987
Other Investment Note Due 2024 Through 2025 [Member] \| Term Loan [Member] \| Agemo Holdings LLC [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount					$ 37,000
Other Investment Note Due 2024 Through 2025 [Member] \| Term Loan [Member] \| Agemo Holdings LLC [Member] \| Tranche One [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount				$ 5,000
Debt instrument, interest rate, stated percentage				13.00%
Other Investment Note Due 2024 Through 2025 [Member] \| Term Loan [Member] \| Agemo Holdings LLC [Member] \| Tranche Two [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount					$ 32,000
Debt instrument, interest rate, stated percentage					9.00%
Other Investment Note Due 2024 Through 2025 [Member] \| Secured Working Capital Loan [Member] \| Agemo Holdings LLC [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount		$ 25,000
Investment Maturity Date	Apr. 30, 2025
Debt instrument, interest rate, stated percentage		7.00%
Other investments, gross	$ 14,300
Other Investment Note Due 2024 Through 2025 [Member] \| Unsecured Loan [Member]
Schedule of Investments [Line Items]
Financing receivable, face amount		$ 2,800