Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue:
Software license	$ 44,802	$ 28,575	$ 128,217	$ 95,517
Maintenance	37,979	32,317	112,238	97,657
Professional services	39,230	40,765	115,117	124,706
Total revenue	122,011	101,657	355,572	317,880
Cost of revenue:
Software license	1,592	1,585	4,751	4,763
Maintenance	3,599	3,745	11,106	11,072
Professional services	32,907	32,335	97,772	103,351
Total cost of revenue	38,098	37,665	113,629	119,186
Gross profit	83,913	63,992	241,943	198,694
Operating expenses:
Selling and marketing	42,663	36,893	127,279	116,476
Research and development	19,786	19,506	59,123	57,411
General and administrative	7,130	7,192	21,203	21,171
Acquisition-related costs	545		545
Total operating expenses	70,124	63,591	208,150	195,058
Income from operations	13,789	401	33,793	3,636
Foreign currency transaction gain (loss)	661	438	(1,666)	337
Interest income, net	123	113	376	318
Other expense, net	(1,163)	(920)	(418)	(1,496)
Income before provision for income taxes	13,410	32	32,085	2,795
Provision for income taxes	4,700	363	9,603	1,336
Net income (loss)	$ 8,710	$ (331)	$ 22,482	$ 1,459
Earnings (loss) per share:
Basic	$ 0.23	$ (0.01)	$ 0.59	$ 0.04
Diluted	$ 0.22	$ (0.01)	$ 0.58	$ 0.04
Weighted-average number of common shares outstanding
Basic	37,955	37,881	37,950	37,834
Diluted	39,079	37,881	38,872	38,897
Cash dividends declared per share	$ 0.03	$ 0.03	$ 0.09	$ 0.09