Condensed Consolidating Statements of Income (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2012 Parent [Member]	Sep. 30, 2012 Parent [Member]	Sep. 30, 2012 Guarantor Subsidiaries [Member]	Sep. 30, 2012 Guarantor Subsidiaries [Member]	Sep. 30, 2012 Non-Guarantor Subsidiaries [Member]	Sep. 30, 2012 Non-Guarantor Subsidiaries [Member]	Sep. 30, 2012 Consolidation, Eliminations [Member]	Sep. 30, 2012 Consolidation, Eliminations [Member]	Sep. 30, 2011 As Restated [Member]		Sep. 30, 2011 As Restated [Member]		Sep. 30, 2011 As Restated [Member] Parent [Member]	Sep. 30, 2011 As Restated [Member] Parent [Member]	Sep. 30, 2011 As Restated [Member] Guarantor Subsidiaries [Member]	Sep. 30, 2011 As Restated [Member] Guarantor Subsidiaries [Member]	Sep. 30, 2011 As Restated [Member] Non-Guarantor Subsidiaries [Member]	Sep. 30, 2011 As Restated [Member] Non-Guarantor Subsidiaries [Member]	Sep. 30, 2011 As Restated [Member] Consolidation, Eliminations [Member]	Sep. 30, 2011 As Restated [Member] Consolidation, Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
Software licenses	$ 27,544		$ 84,977	$ 0	$ 0	$ 27,297	$ 84,263	$ 247	$ 714	$ 0	$ 0	$ 34,726	[1]	$ 100,591	[1]	$ 0	$ 0	$ 34,660	$ 100,525	$ 66	$ 66	$ 0	$ 0
Subscriptions and other recurring revenues	3,909		11,695	0	0	3,909	11,695	0	0	0	0	3,738	[1]	12,582	[1]	0	0	3,738	12,582	0	0	0	0
Maintenance services	68,784		202,312	0	0	61,615	173,032	7,169	29,280	0	0	67,632	[1]	198,545	[1]	0	0	47,448	139,208	20,184	59,337	0	0
Product revenues	100,237		298,984	0	0	92,821	268,990	7,416	29,994	0	0	106,096	[1]	311,718	[1]	0	0	85,846	252,315	20,250	59,403	0	0
Consulting services	59,090		179,852	0	0	38,924	122,195	20,166	57,657	0	0	60,970	[1]	177,156	[1]	0	0	37,338	117,588	23,632	59,568	0	0
Reimbursed expenses	5,193		16,627	0	0	3,266	10,860	1,927	5,767	0	0	6,033	[1]	17,265	[1]	0	0	3,762	11,012	2,271	6,253	0	0
Service revenues	64,283		196,479	0	0	42,190	133,055	22,093	63,424	0	0	67,003	[1]	194,421	[1]	0	0	41,100	128,600	25,903	65,821	0	0
Total revenues	164,520		495,463	0	0	135,011	402,045	29,509	93,418	0	0	173,099	[1]	506,139	[1]	0	0	126,946	380,915	46,153	125,224	0	0
Cost of software licenses	1,034		3,469	0	0	1,034	3,469	0	0	0	0	1,009	[1]	3,139	[1]	0	0	1,009	3,139	0	0	0	0
Amortization of acquired software technology	1,702		5,107	0	0	1,702	5,107	0	0	0	0	1,726	[1]	5,393	[1]	0	0	1,726	5,393	0	0	0	0
Cost of maintenance services	14,101		42,435	0	0	9,111	26,569	4,990	15,866	0	0	13,654	[1]	42,376	[1]	0	0	8,531	26,958	5,123	15,418	0	0
Cost of product revenues	16,837		51,011	0	0	11,847	35,145	4,990	15,866	0	0	16,389	[1]	50,908	[1]	0	0	11,266	35,490	5,123	15,418	0	0
Cost of consulting services	45,733		137,638	0	0	28,871	88,796	16,862	48,842	0	0	44,505	[1]	138,015	[1]	0	0	26,699	86,857	17,806	51,158	0	0
Reimbursed expenses	5,193		16,627	0	0	3,266	10,860	1,927	5,767	0	0	6,033	[1]	17,265	[1]	0	0	3,762	11,012	2,271	6,253	0	0
Cost of service revenues	50,926		154,265	0	0	32,137	99,656	18,789	54,609	0	0	50,538	[1]	155,280	[1]	0	0	30,461	97,869	20,077	57,411	0	0
Total cost of revenues	67,763		205,276	0	0	43,984	134,801	23,779	70,475	0	0	66,927	[1]	206,188	[1]	0	0	41,727	133,359	25,200	72,829	0	0
GROSS PROFIT	96,757		290,187	0	0	91,027	267,244	5,730	22,943	0	0	106,172	[1]	299,951	[1]	0	0	85,219	247,556	20,953	52,395	0	0
Product development	18,297		56,101	0	0	11,277	34,539	7,020	21,562	0	0	18,747	[1]	58,601	[1]	0	0	11,219	36,139	7,528	22,462	0	0
Sales and marketing	24,265		73,632	0	0	15,579	46,838	8,686	26,794	0	0	25,756	[1]	77,360	[1]	0	0	15,636	47,154	10,120	30,206	0	0
General and administrative	21,009		70,354	985	3,700	16,264	54,627	3,760	12,027	0	0	15,815	[1]	54,488	[1]	(54)	(120)	11,936	43,440	3,933	11,168	0	0
Amortization of intangibles	9,530		28,590	0	0	9,530	28,590	0	0	0	0	9,562	[1]	28,872	[1]	0	0	9,562	28,872	0	0	0	0
Restructuring charges	(163)		2,280	0	0	2	439	(165)	1,841	0	0	768	[1]	1,279	[1]	0	0	370	616	398	663	0	0
Litigation settlement	0		0									0	[1]	(37,500)	[1]		0		(37,500)		0		0
Total operating expenses	72,938		230,957	985	3,700	52,652	165,033	19,301	62,224	0	0	70,648	[1]	183,100	[1]	(54)	(120)	48,723	118,721	21,979	64,499	0	0
OPERATING INCOME	23,819		59,230	(985)	(3,700)	38,375	102,211	(13,571)	(39,281)	0	0	35,524	[1]	116,851	[1]	54	120	36,496	128,835	(1,026)	(12,104)	0	0
Interest expense and amortization of loan fees	6,608		19,562	6,383	18,904	185	534	40	124	0	0	6,435	[1]	19,085	[1]	6,249	18,499	137	398	49	188	0	0
Interest income and other, net	(1,253)		(3,192)	(777)	(1,700)	17,714	51,311	(18,190)	(52,803)	0	0	(641)		(2,641)		108	(1,100)	4,735	24,158	(5,484)	(25,699)	0	0
Income tax provision	7,413	11,400	16,505	(2,505)	(7,944)	8,211	20,141	1,707	4,308	0	0	11,443	[1]	21,294	[1]	(2,425)	(6,566)	12,418	24,880	1,450	2,980	0	0
Equity in earnings of subsidiaries, net	0		0	15,137	39,315	2,365	5,901	0	0	(17,502)	(45,216)	0		0		22,165	89,826	1,634	(9,918)	0	0	(23,799)	(79,908)
NET INCOME	$ 11,051		$ 26,355	$ 11,051	$ 26,355	$ 14,630	$ 36,126	$ 2,872	$ 9,090	$ (17,502)	$ (45,216)	$ 18,287	[1]	$ 79,113	[1]	$ 18,287	$ 79,113	$ 20,840	$ 69,481	$ 2,959	$ 10,427	$ (23,799)	$ (79,908)

[1] (1) As restated - See Note 14 “Restatement of Previously Issued Financial Statements” of Notes to Condensed Consolidated Financial Statements.See notes to Condensed Consolidated Financial Statements.