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Commitments (Tables)
 12 Months Ended
Dec. 31, 2012
Commitments [Abstract]  
Future minimum obligations under all non-cancelable leases, net of expected sublease income, and other contractual obligations
The future minimum obligations under all non-cancelable leases, net of expected sublease income, and other contractual obligations are as follows (in thousands):
 
Net
Operating
Leases
 
Other
Contractual
Obligations
2013
$
12,051

 
$
3,889

2014
8,967

 
1,291

2015
4,710

 
1,040

2016
3,381

 
550

2017
2,344

 
275

Thereafter
5,625

 
—

Total minimum payments
$
37,078

 
$
7,045