Deferred Revenue

9 Months Ended

Sep. 30, 2011

Deferred Revenue [Abstract]

Deferred Revenue

8.    DEFERRED REVENUE

(in thousands)	September 30, 2011		December 31, 2010
Software license	$	14,134	$	7,617
Maintenance		46,765		43,594
Professional services and other		6,417		5,692
Current deferred revenue		67,316		56,903
Software license		15,342		15,833
Maintenance and professional services		380		1,918
Long-term deferred revenue		15,722		17,751
	$	83,038	$	74,654