Condensed Consolidated Statements of Cash Flows (USD $) In Thousands	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010
Net income (loss)	$ 72,450	$ 11,871
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	44,261	43,029
Provision for doubtful accounts	0	999
Amortization of loan fees	1,739	1,412
Net gain on disposal of property and equipment	24	(8)
Stock-based compensation	13,073	8,834
Deferred income taxes	14,652	(121)
Changes in assets and liabilities, net of effects from business acquisition:
Accounts receivable	(17,674)	1,281
Income tax receivable	(3,430)	2,225
Prepaid expenses and other assets	(9,342)	(12,948)
Accounts payable	(13,817)	8,810
Accrued expenses and other liabilities	11,185	(15,837)
Income tax payable	(1,436)	(5,427)
Deferred revenue	20,935	(5,127)
Net cash provided by operating activities	132,620	38,993
Investing Activities:
Change in restricted cash	(2,293)	277,554
Purchase of i2 Technologies, Inc.	0	(213,427)
Payment of direct costs related to acquisitions	(2,579)	(2,749)
Purchase of property and equipment	(7,625)	(14,785)
Proceeds from disposal of property and equipment	51	631
Net cash (used in) provided by investing activities	(12,446)	47,224
Financing Activities:
Issuance of common stock—equity plans	5,261	13,836
Purchase of treasury stock and other, net	(5,166)	(4,645)
Conversion of warrants	671	0
Debt Issuance Costs	(1,727)	0
Net cash (used in) provided by financing activities	(961)	9,191
Effect of exchange rates on cash and cash equivalents	(1,173)	988
Net increase in cash and cash equivalents	118,040	96,396
Cash and Cash Equivalents, Beginning of Period	171,618	75,974
Cash and Cash Equivalents, End of Period	289,658	172,370
Supplemental Disclosures of Cash Flow Information:
Cash paid for income taxes	9,709	10,403
Cash paid for interest	11,029	13,681
Cash received for income tax refunds	$ 1,320	$ 1,553