REVENUE RECOGNITION (Tables)

3 Months Ended

Mar. 31, 2020

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 March 31, 2020
Accounts receivable	$	82,592
Short-term unbilled receivables		2,757
Short-term deferred revenue		99,565
Long-term deferred revenue		49,866

Summary of Significant Changes in Unbilled Receivables and Deferred Liabilities Balances

Significant changes in the unbilled receivables and deferred liabilities balances for the three months ended March 31, 2020 and 2019, are as follows (in thousands):

	Three Months Ended March 31, 2020
	Unbilled Receivables Increase (Decrease)		Deferred Revenue (Increase) Decrease
Balance at December 31, 2019	$	1,362	$	(144,862	)
Revenue recognized that was previously included in deferred revenue		—		38,749
Increases due to cash received		—		(43,685	)
Cumulative catch-up adjustment arising from changes in estimates of    transaction price		—		367
Unbilled receivables recognized		1,395		—
Transferred to receivables from unbilled receivables		—		—
Net change		1,395		(4,569	)
Balance at March 31, 2020	$	2,757	$	(149,431	)

	Three Months Ended March 31, 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		—			27,596
Increases due to cash received		—			(33,080	)
Cumulative catch-up adjustment arising from changes in estimates of    transaction price		—			159
Transferred to receivables from unbilled receivables		(779	)		—
Net change		(779	)		(5,325	)
Balance at March 31, 2019	$	241		$	(127,892	)