Goodwill and Intangible Assets (Detail) - Carrying Amounts of Amortizable Intangible Assets - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 118,003
Foreign currency translation impact and other	4
Gross carrying amount	118,007
Accumulated amortization	(27,454)		$ (21,459)
Finite-lived intangible assets, net	90,553		96,544
Amortization of intangibles	6,183	$ 2,139
Trade Name
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	4,144
Foreign currency translation impact and other	18
Gross carrying amount	4,162
Accumulated amortization	(946)		(681)
Finite-lived intangible assets, net	$ 3,216		3,463
Trade Name | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	4 years
Trade Name | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	2 years
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 62,860
Foreign currency translation impact and other	204
Gross carrying amount	63,064
Accumulated amortization	(11,675)		(9,028)
Finite-lived intangible assets, net	$ 51,389		53,832
Customer Relationships | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	4 years
Customer Relationships | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	7 years
Content
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 5,450
Foreign currency translation impact and other	(150)
Gross carrying amount	5,300
Accumulated amortization	(3,868)		(3,525)
Finite-lived intangible assets, net	$ 1,432		1,925
Content | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	1 year 6 months
Content | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	4 years
Software
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 16,219
Foreign currency translation impact and other	(85)
Gross carrying amount	16,134
Accumulated amortization	(4,926)		(3,699)
Finite-lived intangible assets, net	$ 11,208		12,520
Finite-lived intangible assets useful life	3 years
Non-Compete
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 29,330
Foreign currency translation impact and other	17
Gross carrying amount	29,347
Accumulated amortization	(6,039)		(4,526)
Finite-lived intangible assets, net	$ 23,308		$ 24,804
Non-Compete | Minimum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	3 years
Non-Compete | Maximum
Finite-lived Intangible Assets [Roll Forward]
Finite-lived intangible assets useful life	5 years