XML 45 R29.htm IDEA: XBRL DOCUMENT v3.8.0.1
Intangible assets, net - Intangible Assets Other than Goodwill (Detail) - USD ($)
$ in Thousands
 9 Months Ended 12 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]    
Gross amount $ 113,928 $ 111,264
Accumulated amortization (22,374) (12,733)
Net intangible assets 91,554 98,531
Software Developed for Internal Use [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross amount 17,945 11,438
Accumulated amortization (1,312) (505)
Net intangible assets $ 16,633 $ 10,933
Software Developed for Internal Use [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 3 years 3 years
Software Developed for Internal Use [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 10 years 10 years
Acquired Proprietary Technology [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 5 years 5 years
Gross amount $ 11,381 $ 13,532
Accumulated amortization (4,124) (2,660)
Net intangible assets 7,257 10,872
Customer Relationships [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross amount 34,986 34,986
Accumulated amortization (8,431) (4,840)
Net intangible assets $ 26,555 $ 30,146
Customer Relationships [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 7 years 7 years
Customer Relationships [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 10 years 10 years
Trade Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 20 years 20 years
Gross amount $ 16,357 $ 18,057
Accumulated amortization (1,482) (916)
Net intangible assets $ 14,875 $ 17,141
Domain Names [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 20 years 20 years
Gross amount $ 199 $ 191
Accumulated amortization (17) (10)
Net intangible assets 182 181
Databases [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross amount 31,292 31,292
Accumulated amortization (6,061) (3,354)
Net intangible assets $ 25,231 $ 27,938
Databases [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 5 years 5 years
Databases [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 10 years 10 years
Non-competition Agreements [Member]    
Finite-Lived Intangible Assets [Line Items]    
Gross amount $ 1,768 $ 1,768
Accumulated amortization (947) (448)
Net intangible assets $ 821 $ 1,320
Non-competition Agreements [Member] | Minimum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 2 years 2 years
Non-competition Agreements [Member] | Maximum [Member]    
Finite-Lived Intangible Assets [Line Items]    
Estimated useful life of intangible assets 5 years 5 years