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Commitments, Contingencies and Guarantees (Tables)
3 Months Ended
Mar. 31, 2012
Commitments Contingencies and Guarantees [Abstract]  
Minimum Aggregate Future Obligations Under Non-cancelable Leases
The expected minimum aggregate future obligations under non-cancelable leases as of March 31, 2012 were as follows (in thousands):
 
 
Operating
Leases
Remaining 2012
$
20,709

2013
26,070

2014
24,573

2015
22,183

2016
14,272

Thereafter
39,345

Total
$
147,152