Deferred Revenue and Advance Payments (Tables)

12 Months Ended

Dec. 31, 2015

Deferred revenue and advance payments (in thousands) from customers consisted of the following, as of:


	December 31,
	2015			2014
Current:
Deferred product licenses revenue	$	13,506		$	10,927
Deferred subscription services revenue		15,763			16,018
Deferred product support revenue		158,738			168,833
Deferred other services revenue		9,149			10,564

Gross current deferred revenue and advance payments		197,156			206,342
Less: unpaid deferred revenue		(96,461	)		(97,929	)

Net current deferred revenue and advance payments	$	100,695		$	108,413


Non-current:
Deferred product licenses revenue	$	5,397		$	8,012
Deferred subscription services revenue		2,138			750
Deferred product support revenue		7,607			7,505
Deferred other services revenue		795			1,047

Gross non-current deferred revenue and advance payments		15,937			17,314
Less: unpaid deferred revenue		(6,942	)		(6,496	)

Net non-current deferred revenue and advance payments	$	8,995		$	10,818