Acquired Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2014

Acquired Intangible Assets, Net [Abstract]

Schedule of Definite-lived Intangible Assets

	December 31,
	2013			2014
Definite-lived
Domain names	$	2,482		$	5,140
Technology		12,013			28,043
Non-compete agreement		3,985			13,026
Customer relationship		2,973			5,110
Distributor relationship		-			6,930
Others		3,666			8,926
Total acquired definite-lived intangible assets		25,119			67,175
Less: Accumulated amortization
Domain names		(859	)		(1,252	)
Technology		(3,450	)		(7,627	)
Non-compete agreement		(1,584	)		(4,426	)
Customer relationship		(507	)		(1,552	)
Distributor relationship		-			(347	)
Others		(1,322	)		(3,225	)
Less: Impairment loss
Domain names		(424	)		(413	)
Technology		(887	)		(859	)
Others		(72	)		(70	)
Acquired definite-lived intangible assets, net	$	16,014		$	47,404

Schedule of Indefinite-lived Intangible Assets

	December 31,
	2013			2014
Indefinite-lived
Domain names	$	371		$	2,937
Trademarks and others		2,200			2,253
Total acquired indefinite-lived intangible assets		2,571			5,190
Less: Accumulated impairment loss
Domain names		(288	)		(282	)
Trademarks and others		(1,049	)		(1,023	)
Accumulated impairment loss		(1,337	)		(1,305	)
Acquired indefinite-lived intangible assets, net	$	1,234		$	3,885