Goodwill and Intangible Assets - Summary of Intangible Assets from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangible assets	$ 130,714	$ 128,067
Accumulated amortization	(42,019)	(26,769)
Net Carrying Amount, finite-lived intangible assets	88,695	101,298
Estimated salvage value of the asset	400	400
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount, intangible assets	131,414	128,767
Intangible assets, net	89,395	101,998
Other intellectual property
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount, indefinite-lived intangible assets (excluding goodwill)	700	700
Internet domain names
Indefinite-lived Intangible Assets [Line Items]
Gross Carrying Amount, indefinite-lived intangible assets (excluding goodwill)		300
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangible assets	76,414	74,656
Accumulated amortization	(22,652)	(14,817)
Net Carrying Amount, finite-lived intangible assets	$ 53,762	$ 59,839
Customer relationships | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	1 year	1 year
Customer relationships | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	11 years	11 years
Trademarks/trade names
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangible assets	$ 24,835	$ 24,543
Accumulated amortization	(7,763)	(4,322)
Net Carrying Amount, finite-lived intangible assets	$ 17,072	$ 20,221
Trademarks/trade names | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	3 years	3 years
Trademarks/trade names | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	11 years	11 years
Technology
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangible assets	$ 25,820	$ 25,223
Accumulated amortization	(8,055)	(4,263)
Net Carrying Amount, finite-lived intangible assets	$ 17,765	$ 20,960
Finite intangible assets, useful life (in years)	5 years
Technology | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	5 years	5 years
Technology | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	10 years	10 years
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount, finite-lived intangible assets	$ 3,645	$ 3,645
Accumulated amortization	(3,549)	(3,367)
Net Carrying Amount, finite-lived intangible assets	$ 96	$ 278
Finite intangible assets, useful life (in years)	5 years
Non-compete agreements | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	2 years	2 years
Non-compete agreements | Maximum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	5 years	5 years
Internet domain names | Minimum
Finite-Lived Intangible Assets [Line Items]
Finite intangible assets, useful life (in years)	2 years	2 years