CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Revenues:
Software license fees	$ 221,846		$ 189,820		$ 164,559
Maintenance fees	199,876		148,357		135,523
Services	131,536		79,770		73,989
Software hosting fees	113,321		47,148		44,353
Total revenues	666,579		465,095		418,424
Expenses:
Cost of software license fees	23,592	[1]	15,418	[1]	12,591	[1]
Cost of maintenance, services and hosting fees	202,052	[1]	118,866	[1]	117,132	[1]
Research and development	133,759		90,176		74,076
Selling and marketing	87,054		80,922		70,553
General and administrative	108,747		71,425		70,096
Depreciation and amortization	37,003		22,057		20,328
Total expenses	592,207		398,864		364,776
Operating income	74,372		66,231		53,648
Other income (expense):
Interest income	914		1,315		665
Interest expense	(10,417)		(2,431)		(1,996)
Other, net	399		(802)		(3,615)
Total other income (expense)	(9,104)		(1,918)		(4,946)
Income (loss) before income taxes	65,268		64,313		48,702
Income tax expense (benefit)	16,422		18,461		21,507
Net income	$ 48,846		$ 45,852		$ 27,195
Income (loss) per share information Weighted average shares outstanding
Basic	38,696		33,457		33,560
Diluted	39,905		34,195		33,870
Earnings per share
Basic	$ 1.26		$ 1.37		$ 0.81
Diluted	$ 1.22		$ 1.34		$ 0.80

[1] The cost of software license fees excludes charges for depreciation but includes amortization of purchased and developed software for resale. The cost of maintenance, services and hosting fees excludes charges for depreciation.