REVENUE RECOGNITION (Tables)

9 Months Ended

Sep. 30, 2019

Revenue From Contract With Customer [Abstract]

Schedule of Assets and Liabilities Associated with Contracts from Customers

The following table provides information about assets and liabilities associated with our contracts from customers (in thousands):

	As of September 30, 2019
Accounts receivable	$	65,774
Short-term unbilled receivables		467
Long-term unbilled receivables		6,899
Short-term deferred revenue		91,188
Long-term deferred revenue		50,495

Summary of Significant Changes in Unbilled Receivables and Deferred Liabilities Balances

Significant changes in the unbilled receivables and deferred liabilities balances during the period are as follows (in thousands):

	Nine Months Ended September 30, 2019
	Unbilled Receivables Increase (Decrease)			Deferred Revenue (Increase) Decrease
Balance at December 31, 2018	$	1,020		$	(122,567	)
Revenue recognized that was previously included in deferred revenue		—			94,044
Increases due to cash received		—			(113,849	)
Cumulative catch-up adjustment arising from changes in estimates of    transaction price		—			689
Unbilled receivables recognized		7,571			—
Transferred to receivables from unbilled receivables		(1,225	)		—
Net change		6,346			(19,116	)
Balance at September 30, 2019	$	7,366		$	(141,683	)