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


	September 30,			December 31,
	2013			2012
Current:
Deferred product licenses revenue	$	9,419		$	12,252
Deferred product support revenue		146,633			145,343
Deferred subscription services revenue		7,891			6,569
Deferred other services revenue		14,074			15,650

Gross current deferred revenue and advance payments		178,017			179,814
Less: unpaid deferred revenue		(60,232	)		(78,565	)

Net current deferred revenue and advance payments	$	117,785		$	101,249


Non-current:
Deferred product licenses revenue	$	2,978		$	3,280
Deferred product support revenue		6,655			8,205
Deferred subscription services revenue		861			696
Deferred other services revenue		1,654			1,184

Gross non-current deferred revenue and advance payments		12,148			13,365
Less: unpaid deferred revenue		(3,017	)		(4,542	)

Net non-current deferred revenue and advance payments	$	9,131		$	8,823