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COMMITMENTS AND CONTINGENCIES (Tables)
 12 Months Ended
Dec. 31, 2012
Commitments and Contingencies Disclosure [Abstract]  
Minimum lease payments
As of December 31, 2012, the Company is contractually obligated to make the following minimum lease payments, including arrangements that may be noncancelable and may include escalation clauses, within the next five years and thereafter (in thousands): 
 
Lease Payments
 
Sublease Income
 
Net Lease Payments
2013
$
31,963

 
$
(777
)
 
$
31,186

2014
24,832

 
(426
)
 
24,406

2015
20,067

 
(439
)
 
19,628

2016
17,976

 
(452
)
 
17,524

2017
15,324

 
(76
)
 
15,248

Thereafter
42,028

 
—

 
42,028

Total
$
152,190

 
$
(2,170
)
 
$
150,020