Goodwill and Intangible Assets (Detail) - Carrying Amounts of Amortizable Intangible Assets (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014		Dec. 31, 2013
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	$ 21,808
Additions due to acquisition	32,001
Amortization of intangibles	1,500
Foreign currency translation adjustments	117
Gross carrying amount	55,426
Accumulated amortization	(19,011)	[1]	(15,701)	[1]
Finite-lived intangible assets, net	36,415		6,107
Trade Name
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	6,023
Additions due to acquisition	915	[2]
Amortization of intangibles	0	[3]
Foreign currency translation adjustments	(2)
Gross carrying amount	6,936
Accumulated amortization	(5,526)	[1]	(4,817)	[1]
Finite-lived intangible assets, net	1,410		1,206
Customer Relationships
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	10,146
Additions due to acquisition	18,013	[2]
Amortization of intangibles	0	[3]
Foreign currency translation adjustments	142
Gross carrying amount	28,301
Accumulated amortization	(9,619)	[1]	(8,372)	[1]
Finite-lived intangible assets, net	18,682		1,774
Content
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	3,496
Additions due to acquisition	273	[2]
Amortization of intangibles	0	[3]
Foreign currency translation adjustments	(15)
Gross carrying amount	3,754
Accumulated amortization	(1,832)	[1]	(1,388)	[1]
Finite-lived intangible assets, net	1,922		2,108
Software
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	2,143
Additions due to acquisition	5,000
Amortization of intangibles	0	[3]
Foreign currency translation adjustments	(8)
Gross carrying amount	7,135
Accumulated amortization	(1,558)	[1]	(1,124)	[1]
Finite-lived intangible assets, net	5,577		1,019
Non-Compete
Finite-lived Intangible Assets [Roll Forward]
Gross carrying amount	0
Additions due to acquisition	7,800
Amortization of intangibles	1,500	[3]
Foreign currency translation adjustments	0
Gross carrying amount	9,300
Accumulated amortization	(476)	[1]
Finite-lived intangible assets, net	$ 8,824

[1] Intangible assets are being amortized against earnings over the following periods: Trade name—2 to 5 years; Customer relationships—4 to 7 years; Content—1.5 to 4 years; Software—3 years; Non-compete—4 to 5 years;

[2] See Note 1 for additional disclosure.

[3] The non-competition intangible relates to a separation agreement with the Company's former CFO which was entered into in June 2014.