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15. COMMITMENTS AND CONTINGENCIES (Tables)
12 Months Ended
Dec. 31, 2015
Commitments and Contingencies Disclosure [Abstract]  
Future Minimum Payment of Operating Lease
 Years Ended December 31,   Capital Leases     Operating Leases
 2016   $4,630   $ 15,662
 2017    3,731     11,647
 2018    547     8,212
 2019         5,558
 2020         953
 Thereafter         1,649
 Total minimum payments    8,908   $ 43,681
 

Amount representing interest

    (477)     
 Obligations under capital leases    8,431      
 

Obligations due within one year

    (4,248)     
 

Long-term obligations under capital leases

   $4,183