REVENUE Deferred Revenue Activity (Tables)

12 Months Ended

Dec. 31, 2019

Movement in Deferred Revenue [Roll Forward]

Deferred Revenue, by Arrangement, Disclosure [Table Text Block]

Deferred Revenue

Deferred revenue activity for the year ended December 31, 2019 was as follows (in thousands):

	December 31, 2019
Deferred revenue at January 1, 2019	$	99,601
Billings deferred	76,665
Recognition of prior deferred revenue	(78,365		)
Deferred revenue at December 31, 2019	$	97,901

A summary of the performance obligations included in deferred revenue as of December 31, 2019 is as follows (in thousands):

	December 31, 2019
Product	$	6,507
Subscription	1,230
Support Contracts	75,618
Implied Maintenance Release PCS	11,974
Professional services, training and other	2,572
Deferred revenue at December 31, 2018	$	97,901

Remaining Performance Obligations

For transaction prices allocated to remaining performance obligations, we apply practical expedients and do not disclose quantitative or qualitative information for remaining performance obligations (i) that have original expected durations of one year or less and (ii) where we recognize revenue equal to what we have the right to invoice and that amount corresponds directly with the value to the customer of our performance to date.

We have remaining performance obligations of $12.0 million attributable to Implied Maintenance Release PCS recorded in deferred revenue as of December 31, 2019. We expect to recognize revenue for these remaining performance obligations of $5.1 million, $3.2 million, $1.8 million, $1.1 million, and $0.6 million for the years ended December 31, 2020, 2021, 2022, 2023, and 2024, respectively.