Acquired Intangible Assets, Net (Tables)

12 Months Ended

Dec. 31, 2012

Acquired Intangible Assets, Net [Abstract]

Acquired Intangible Assets, Net

	December 31,
	2011			2012
Indefinite-lived:
Domain names	$	757		$	360
Trademarks		1,274			1,288
License of service provider		604			-
Definite-lived:
Domain names		836			2,426
Source code		1,752			1,754
Technology		4,579			6,999
Non-compete agreement		121			3,933
License of service provider		-			610
Trademarks		-			77
Total acquired intangible assets		9,923			17,447
Less: Accumulated amortization
Domain names		(64	)		(423	)
Source code		(572	)		(821	)
Technology		(1,009	)		(1,872	)
Non-compete agreement		(59	)		(299	)
Trademarks		-			(2	)
Accumulated amortization		(1,704	)		(3,417	)
Less: Impairment loss
Domain names		(278	)		(692	)
Source code		(87	)		(158	)
Trademarks		-			(197	)
Technology		-			(673	)
Accumulated impairment loss		(365	)		(1,720	)
Acquired intangible assets, net	$	7,854		$	12,310