Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010		Dec. 31, 2009
Operating Activities:
Net income	$ 82,688	$ 2,141		$ 27,575
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	58,838
Provision for doubtful accounts	0
Amortization of loan fees	2,351
Excess tax benefits from stock-based compensation	1,216
Net loss (gain) on disposal of property and equipment	414
Stock-based compensation	13,016	11,494		8,095
Deferred income taxes	15,545
Changes in operating assets and liabilities, net of effects from business acquisition:
Accounts receivable	(4,000)
Prepaid expenses and other assets	(3,051)
Accounts payable	(14,310)
Accrued expenses and other liabilities	(26,765)
Deferred revenue	(16,111)
Net cash provided by operating activities	109,831
Investing Activities:
Change in restricted cash	25,470
Purchase of i2 Technologies, Inc.	0
Purchase of equity interest	0
Purchase of property and equipment	(19,444)
Proceeds from disposal of property and equipment	53
Net cash provided by (used in) investing activities	6,079
Financing Activities:
Issuance of common stock	7,958
Excess tax benefits for stock-based compensation	(1,216)
Purchase of treasury stock and other, net	(5,745)
Redemption of redeemable preferred stock	0
Proceeds from issuance of long-term debt, net of discount	0
Debt Issuance Costs	(1,727)
Conversion of warrants	671
Net cash (used in) provided by financing activities	(59)
Effect of exchange rates on cash and cash equivalents	(1,957)
Net increase in cash and cash equivalents	113,894
Cash and Cash Equivalents, Beginning of Period	171,618
Cash and Cash Equivalents, End of Period	285,512	171,618
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	14,996
Cash paid for interest	22,339
Cash received for income tax refunds	1,605
Supplemental Disclosure of Non-cash Investing Activities:
Increase of goodwill recorded in acquisitions	0
Shares issued in acquisition of i2 Technologies, Inc.	0
Supplemental Disclosure of Non-cash Financing Activities:
Conversion of redeemable preferred stock to common stock	0
As Restated [Member]
Operating Activities:
Net income		2,141	[1]	27,575	[1]
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization		58,246	[1]	37,239	[1]
Provision for doubtful accounts		1,000	[1]	1,900	[1]
Amortization of loan fees		1,970	[1]	110	[1]
Excess tax benefits from stock-based compensation		(278)	[1]	(720)	[1]
Net loss (gain) on disposal of property and equipment		(9)	[1]	(42)	[1]
Stock-based compensation		11,494	[1]	8,095	[1]
Deferred income taxes		(10,604)	[1]	5,953	[1]
Changes in operating assets and liabilities, net of effects from business acquisition:
Accounts receivable		(5,934)	[1]	5,288	[1]
Prepaid expenses and other assets		(2,204)	[1]	(1,301)	[1]
Accounts payable		11,939	[1]	4,595	[1]
Accrued expenses and other liabilities		(6,538)	[1]	1,587	[1]
Deferred revenue		523	[1]	2,452	[1]
Net cash provided by operating activities		61,746	[1]	92,731	[1]
Investing Activities:
Change in restricted cash		253,020	[1]	(287,875)	[1]
Purchase of i2 Technologies, Inc.		(213,427)	[1]	0	[1]
Purchase of equity interest		0	[1]	2,079	[1]
Purchase of property and equipment		(16,866)	[1]	(7,136)	[1]
Proceeds from disposal of property and equipment		634	[1]	84	[1]
Net cash provided by (used in) investing activities		23,361	[1]	(297,006)	[1]
Financing Activities:
Issuance of common stock		14,893	[1]	14,849	[1]
Excess tax benefits for stock-based compensation		278	[1]	720	[1]
Purchase of treasury stock and other, net		(5,306)	[1]	(6,543)	[1]
Redemption of redeemable preferred stock		0	[1]	(28,068)	[1]
Proceeds from issuance of long-term debt, net of discount		0	[1]	272,217	[1]
Debt Issuance Costs		0	[1]	(6,487)	[1]
Conversion of warrants		179	[1]	0	[1]
Net cash (used in) provided by financing activities		10,044	[1]	246,688	[1]
Effect of exchange rates on cash and cash equivalents		493	[1]	865	[1]
Net increase in cash and cash equivalents		95,644	[1]	43,278	[1]
Cash and Cash Equivalents, Beginning of Period		75,974	[1]	32,696	[1]
Cash and Cash Equivalents, End of Period		171,618	[1]	75,974	[1]
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes		14,501	[1]	3,854	[1]
Cash paid for interest		22,481	[1]	1,149	[1]
Cash received for income tax refunds		1,841	[1]	856	[1]
Supplemental Disclosure of Non-cash Investing Activities:
Increase of goodwill recorded in acquisitions		97,329	[1]	0	[1]
Shares issued in acquisition of i2 Technologies, Inc.		167,621	[1]	0	[1]
Supplemental Disclosure of Non-cash Financing Activities:
Conversion of redeemable preferred stock to common stock		$ 0	[1]	$ 30,525	[1]

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