REVENUE RECOGNITION (Tables)

9 Months Ended

Sep. 30, 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 September 30, 2020
Accounts receivable	$	99,350
Short-term unbilled receivables		6,600
Long-term unbilled receivables		8,256
Short-term deferred revenue		138,391
Long-term deferred revenue		51,657

Summary of Significant Changes in Unbilled Receivables and Deferred Liabilities Balances

Significant changes in the unbilled receivables and deferred liabilities balances for the nine months ended September 30, 2020 and 2019, are as follows (in thousands):

	Nine Months Ended September 30, 2020
	Unbilled Receivables		Deferred Revenue
Balance at December 31, 2019	$	1,362	$	(144,862	)
Revenue recognized that was previously included in deferred revenue		—		97,556
Increases due to cash received		—		(144,200	)
Cumulative catch-up adjustment arising from changes in estimates of transaction price		—		1,458
Unbilled receivables recognized		13,494		—
Net change		13,494		(45,186	)
Balance at September 30, 2020	$	14,856	$	(190,048	)

	Nine Months Ended September 30, 2019
	Unbilled Receivables			Deferred Revenue
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	)