TAXATION (Tables)
 12 Months Ended
Dec. 31, 2014
Taxation [Line Items]  
Schedule of income tax benefit/(expense)
Years ended December 31  
2012     2013     2014  
Current income tax expense (339 )     (106 )     (2,540 ) 
Deferred income tax benefit/(expense) 129       (586 )     1,717
Income tax expense     (210 )     (692 )     (823 )
Schedule of (loss)/income before income taxes
Years ended December 31  
2012     2013     2014  
(Loss)/income arising from China operations (936 )     (6,926 )     6,293  
(Loss)/income arising from non-China operations (2,914 )     (2,503 )     829  
-  U.S.     30       15       (1,487 ) 
-  Hong Kong     (513 )     511       4,616  
-  Cayman     (2,431 )     (3,029 )     (2,300 )
                         
(Loss)/income before income taxes and share of loss of an unconsolidated affiliate     (3,850 )     (9,429 )     7,122  
Schedule of reconciliation between the PRC statutory income tax rate and the effective tax rate
Years ended December 31  
2012     2013     2014  
Statutory tax rate 25 %     25 %     25 %
Effect of foreign tax rates differential (16 )%     (8 )%     9 %
Deferred tax rate differential     4 %     (1 )%     11 %
Non-deductible expenses     (30 )%     (36 )%     7 %
Change in valuation allowance     14 %     18 %     (29 )%
Effect of elimination of unrealized intra-entity profits     —       (5 )%     46 %
Effect of preferential tax treatment inside of PRC     —       —       (36 )%
Others     (2 )%     —       3 %
Effective income tax rate     (5 )%     (7 )%     36 %
Schedule of significant components of deferred tax assets and liabilities
As of December 31
2013 2014
Deferred tax assets          
Provision for doubtful accounts and slow-moving inventories 1,364       3,006  
Accrued expenses, payroll and others     1,053       1,065  
Difference in tax basis from ViSS acquisition     695       515  
Difference in research and development expenses capitalization     3,229       -  
Operating loss carry-forwards     3,660       768  
Others     1,599       519  
Total deferred tax assets     11,600       5,873  
Valuation allowance     (11,600 )     (4,156 ) 
Deferred tax assets, net of valuation allowance     —       1,717  
                 
Deferred tax liabilities                
Differences in tax basis for property equipment and software, non-current     14       5  
Total deferred tax liabilities     14       5  
                 
Classification on the consolidated balance sheets                
Deferred tax assets — current     —       1,014  
Deferred tax assets — non-current     —       703  
Deferred tax liabilities — non-current     14       5  
Schedule of changes in unrecognized tax benefits
As of December 31  
2013     2014  
Beginning balance -       1,688  
Additions based on tax position of the current year 1,688       -  
Ending balance     1,688       1,688