Segment Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended		3 Months Ended	6 Months Ended
	Jun. 30, 2012 Customers	Jun. 30, 2012	Jun. 30, 2011 As Restated [Member]		Jun. 30, 2011 As Restated [Member]		Jun. 30, 2012 Supply Chain [Member]	Jun. 30, 2012 Supply Chain [Member]	Jun. 30, 2011 Supply Chain [Member] As Restated [Member]	Jun. 30, 2011 Supply Chain [Member] As Restated [Member]	Jun. 30, 2012 Pricing and Revenue Management [Member]	Jun. 30, 2012 Pricing and Revenue Management [Member]	Jun. 30, 2011 Pricing and Revenue Management [Member] As Restated [Member]	Jun. 30, 2011 Pricing and Revenue Management [Member] As Restated [Member]	Jun. 30, 2012 Unallocated Amount to Segment [Member]	Jun. 30, 2012 Unallocated Amount to Segment [Member]	Jun. 30, 2011 Unallocated Amount to Segment [Member]	Jun. 30, 2011 Unallocated Amount to Segment [Member] As Restated [Member]	Jun. 30, 2011 Unallocated Amount to Segment [Member] As Restated [Member]
Segment Reporting Information [Line Items]
Number of customers worldwide (customers)	6,000
Revenues	$ 168,757	$ 330,943	$ 165,522		$ 333,040		$ 164,593	$ 321,432	$ 159,908	$ 323,114	$ 4,164	$ 9,511	$ 5,614	$ 9,926
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	16,902	24,396	17,378		70,677		57,262	107,514	48,853	102,636	(1,190)	(1,255)	72	(315)	(39,170)	(81,863)	(31,644)	(31,547)	(31,644)
Depreciation	3,793	7,461	3,405		6,769		3,707	7,291	3,300	6,559	86	170	105	210
General and administrative	24,526	49,345	16,314	[1]	38,673	[1]
Amortization of intangibles	9,530	19,060	9,592	[1]	19,310	[1]
Restructuring charges	224	2,443	(31)	[1]	511	[1]
Litigation settlement	0	0	0	[1]	(37,500)	[1]
Interest expense and amortization of loan fees	6,537	12,954	6,439	[1]	12,650	[1]
Interest income and other, net	$ (1,647)	$ (1,939)	$ (767)	[1]	$ (2,000)	[1]

[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.