Deferred Revenue (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010 As Restated [Member]		Dec. 31, 2011 Software [Member]	Dec. 31, 2010 Software [Member] As Restated [Member]	Dec. 31, 2011 Maintenance [Member]	Dec. 31, 2010 Maintenance [Member] As Restated [Member]	Dec. 31, 2011 Consulting [Member]	Dec. 31, 2010 Consulting [Member] As Restated [Member]	Dec. 31, 2011 Training and other [Member]	Dec. 31, 2010 Training and other [Member] As Restated [Member]
Deferred Revenue Arrangement [Line Items]
Deferred revenue—current portion	$ 108,217	$ 115,904	[1]	$ 9,095	$ 23,147	$ 89,462	$ 78,952	$ 7,223	$ 12,057	$ 2,437	$ 1,748
Deferred revenue—long-term portion	8,115	15,475	[1]	4,286	8,723	716	3,868	3,113	2,884	0	0
Total deferred revenue	$ 116,332	$ 131,379

[1] As restated - See Note 23 “Restatement of Previously Issued Financial Statements” of Notes to Consolidated Financial Statements.