Goodwill and Intangible Assets (Detail) - Carrying Amounts of Amortizable Intangible Assets - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			$ 14,798
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			118,003
Foreign currency translation impact	$ 168
Gross carrying amount	132,969		132,969
Accumulated amortization	(33,702)		(33,702)		$ (21,459)
Finite-lived intangible assets, net	99,267		99,267		96,544
Amortization of intangibles	6,210	$ 2,107	12,393	$ 4,246
Trade Name
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			740
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			4,144
Foreign currency translation impact	29
Gross carrying amount	4,913		4,913
Accumulated amortization	(1,209)		(1,209)		(681)
Finite-lived intangible assets, net	3,704		$ 3,704		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 [Line Items]
Finite-lived Intangible Assets Acquired			$ 7,399
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			62,860
Foreign currency translation impact	310
Gross carrying amount	70,569		70,569
Accumulated amortization	(14,228)		(14,228)		(9,028)
Finite-lived intangible assets, net	56,341		$ 56,341		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 [Line Items]
Finite-lived Intangible Assets Acquired			$ 4,439
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			5,450
Foreign currency translation impact	(140)
Gross carrying amount	9,749		9,749
Accumulated amortization	(4,434)		(4,434)		(3,525)
Finite-lived intangible assets, net	5,315		$ 5,315		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 [Line Items]
Finite-lived Intangible Assets Acquired			$ 740
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			16,219
Foreign currency translation impact	(56)
Gross carrying amount	16,903		16,903
Accumulated amortization	(6,280)		(6,280)		(3,699)
Finite-lived intangible assets, net	10,623		$ 10,623		12,520
Finite-lived intangible assets useful life			3 years
Non-Compete
Finite-Lived Intangible Assets [Line Items]
Finite-lived Intangible Assets Acquired			$ 1,480
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount			29,330
Foreign currency translation impact	25
Gross carrying amount	30,835		30,835
Accumulated amortization	(7,551)		(7,551)		(4,526)
Finite-lived intangible assets, net	$ 23,284		$ 23,284		$ 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