SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 3)
12 Months Ended
Dec. 31, 2013
Customer base and customer relationship | Minimum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 3 years
Customer base and customer relationship | Maximum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 6 years 9 months 18 days
Non-compete agreement | Minimum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 1 year
Non-compete agreement | Maximum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 5 years
Contract backlog | Minimum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 6 months
Contract backlog | Maximum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 2 years 1 month 20 days
Trade name
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 1 year
Trademark | Minimum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 1 year
Trademark | Maximum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 2 years
Software Technology | Minimum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 4 years
Software Technology | Maximum
 
Intangible assets  
Estimated economic lives or weighted-average amortization period 5 years