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Segment Information (Tables)
9 Months Ended
Sep. 30, 2011
Segment Reporting, Disclosure of Entity's Reportable Segments [Abstract] 
Schedule of Segment Reporting Information, by Segment [Table Text Block]
A summary of the revenues, operating income and depreciation attributable to each of these reportable business segments for the three and nine months ended September 30, 2011 and 2010 is as follows:
 
 
Three Months
Ended September 30,
 
Nine Months
Ended September 30,
 
2011
 
2010
 
2011
 
2010
Revenues:
 
 
 
 
 
 
 
Supply Chain
$
165,298

 
$
153,706

 
$
481,540

 
$
431,870

Pricing and Revenue Management
6,265

 
4,737

 
16,039

 
16,577

 
$
171,563

 
$
158,443

 
$
497,579

 
$
448,447

Operating Income (Loss):
 
 
 
 
 
 
 
Supply Chain
$
57,923

 
$
50,435

 
$
153,043

 
$
142,977

Pricing and Revenue Management
1,257

 
(743
)
 
742

 
(589
)
Other (see below)
(26,348
)
 
(32,157
)
 
(47,541
)
 
(108,050
)
 
$
32,832

 
$
17,535

 
$
106,244

 
$
34,338

Depreciation:
 
 
 
 
 
 
 
Supply Chain
$
3,132

 
$
2,708

 
$
9,692

 
$
7,769

Pricing and Revenue Management
95

 
145

 
305

 
512

 
$
3,227

 
$
2,853

 
$
9,997

 
$
8,281

Other:
 
 
 
 
 
 
 
General and administrative
$
16,018

 
$
17,546

 
$
54,420

 
$
55,044

Amortization of intangible assets
9,562

 
9,966

 
28,872

 
28,447

Restructuring charge and adjustments to acquisition-related reserves
768

 
4,172

 
1,749

 
16,478

Acquisition-related costs
—

 
473

 
—

 
8,081

Litigation settlement
—

 
—

 
(37,500
)
 
—

 
$
26,348

 
$
32,157

 
$
47,541

 
$
108,050