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GOODWILL AND INTANGIBLE ASSETS (DETAILS) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2015
Goodwill [Roll Forward]      
Goodwill net balance, opening $ 47,148 $ 46,422  
Acquisition of Ternian, goodwill 0    
Foreign currency translation adjustment, goodwill   726  
Impairment charges, goodwill 0    
Goodwill net balance, closing 47,148 47,148  
Goodwill, gross     $ 42,237
Accumulated foreign currency translation adjustment, goodwill     4,911
Goodwill, net 47,148 46,422 47,148
Intangible Assets with an Indefinite Life [Roll Forward]      
Intangible assets with an indefinite life net balance, opening 26,036 26,036  
Acquisition of Ternian, intangible assets with an indefinite life 0    
Foreign currency translation adjustment, intangible assets with an indefinite life   0  
Impairment charges, intangible assets with an indefinite life 0    
Intangible assets with an indefinite life net balance, closing 26,036 26,036  
Intangible assets with an indefinite life, gross     26,036
Accumulated foreign currency translation adjustment, intangible assets with an indefinite life     0
Intangible assets with an indefinite life, net 26,036 26,036 26,036
Intangible Assets with a Finite Life [Roll Forward]      
Intangible assets with a finite life net balance, opening 15,776 17,070  
Amortization, intangible assets with a finite life (2,493) (1,982)  
Foreign currency translation adjustment, intangible assets with a finite life   688  
Intangible assets with a finite life net balance, closing 13,674 15,776  
Intangible assets with a finite life, gross     29,166
Accumulated amortization, intangible assets with a finite life     (15,492)
Accumulated foreign currency translation adjustment, intangible assets with a finite life     0
Intangible assets with a finite life, net 15,776 17,070 13,674
Goodwill and Intangible Assets [Roll Forward]      
Goodwill and intangible assets net balance, opening 88,960 89,528  
Amortization, intangible assets with a finite life (2,493) (1,982)  
Foreign currency translation adjustment, goodwill and intangible assets   1,414  
Goodwill and intangible assets net balance, closing 86,858 88,960  
Goodwill and intangible assets, gross     97,439
Accumulated amortization, intangible assets with a finite life     (15,492)
Accumulated foreign currency translation, goodwill and intangible assets     4,911
Goodwill and intangible assets, net 88,960 $ 89,528 $ 86,858
Ternian [Member]      
Intangible Assets with a Finite Life [Roll Forward]      
Acquisition of Ternian, intangible assets with a finite life 13,330    
Goodwill and Intangible Assets [Roll Forward]      
Acquisition of Ternian, goodwill and intangible assets 13,330    
Australian Acquiree [Member]      
Intangible Assets with a Finite Life [Roll Forward]      
Impairment charges, intangible assets with a finite life (12,939)    
Goodwill and Intangible Assets [Roll Forward]      
Impairment charges, goodwill and intangible assets $ (12,939)