LONG-TERM DEFERRED REVENUE LIABILITIES AND OTHER LONG-TERM LIABILITIES (Tables)

3 Months Ended

Mar. 31, 2020

Long-term Deferred Revenue Liabilities and Other Long-term Liabilities [Abstract]

Schedule of long-term deferred revenue liabilities and other long-term liabilities

	March 31,		December 31,
	2020		2019
	(in thousands)
Long-term deferred revenue liabilities	$	36,826	$	36,920
Long-term deferred proceeds, WLR agreement	13,061		13,061
Long-term deferred proceeds, WLWI agreement	23,768		23,768
Total long-term deferred revenue liabilities and other long-term liabilities	$	73,655	$	73,749