Annual report pursuant to Section 13 and 15(d)

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Useful Life of Other Purchased Intangible Assets) (Details)

v3.6.0.2
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Useful Life of Other Purchased Intangible Assets) (Details)
 12 Months Ended
Dec. 31, 2016
Purchased data files | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 2 years
Purchased data files | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 15 years
Acquired software and technology | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 1 year
Acquired software and technology | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 10 years
Non-compete agreements | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 1 year
Non-compete agreements | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 5 years
Proprietary database | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 6 years
Proprietary database | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 10 years
Customer relationships | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 2 years
Customer relationships | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 25 years
Trade Names | Minimum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 1 year
Trade Names | Maximum  
Finite-Lived Intangible Assets [Line Items]  
Useful Life 15 years