STOCKHOLDERS' EQUITY - Capital Stock (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Aug. 01, 2018
Equity [Abstract]
Equity Offering Program, Authorized Offering Amount		$ 1,000,000
Equity offering program, remaining authorized offering amount	$ 1,000,000
Stock Issued During Period, Value, New Issues, Equity Offering Program	$ 0