ADOPTION OF NEW ACCOUNTING STANDARDS - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2018	Sep. 30, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Reclassification from AOCI, Current Period, Stranded Tax Effects ASU 2018-02, Tax		$ 161
Amortization	$ 6,000	20,000
Accounting Standards Update 2016-18
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Increase to net cash used in operating activities			$ 2,600
Prepaid expenses and other current assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Costs	3,000	3,000
Other Noncurrent Assets
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred Costs	$ 11,000	$ 11,000