REVENUE Deferred Revenue Activity (Tables)

12 Months Ended

Dec. 31, 2018

Movement in Deferred Revenue [Roll Forward]

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

A summary of the performance obligations included in deferred revenue as of December 31, 2018 is as follows (in thousands):

	December 31, 2018
Product	$	6,138
Subscription	1,006
Support Contracts	69,384
Implied PCS	16,470
Professional services, training and other	6,603
Deferred revenue at December 31, 2018	$	99,601

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 $16.5 million attributable to Implied PCS recorded in deferred revenue as of

December 31, 2018. We expect to recognize revenue for these remaining performance obligations of $6.8 million, $4.7 million, $2.8 million, $1.4 million and $0.8 million for the years ended December 31, 2019, 2020, 2021, 2022, and 2023, respectively.