REVENUE Deferred Revenue Activity (Tables)

9 Months Ended

Sep. 30, 2019

Deferred Revenue Arrangement [Line Items]

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

Deferred Revenue

Deferred revenue activity for the nine months ended September 30, 2019 was as follows (in thousands):

	September 30, 2019
Deferred revenue at January 1, 2019	$	99,601
Billings deferred	54,882
Recognition of prior deferred revenue	(69,502		)
Deferred revenue at September 30, 2019	$	84,981

A summary of the significant performance obligations included in deferred revenue as of September 30, 2019 is as follows (in thousands):

	September 30, 2019
Product	$	7,363
Subscription	2,071
Support contracts	60,681
Implied PCS	12,816
Professional services, training and other	2,050
Deferred revenue at September 30, 2019	$	84,981