Investments (Tables)

12 Months Ended

Dec. 31, 2015

Investments [Abstract]

Short-term Investments

	As of December 31, 2014
	Original cost		Gross unrealized gains		Gross unrealized losses			Provision for decline in value		Fair value
Short-term investment:
Trading securities	$	253	$	92	$	(172	)	$	-	$	173
Available-for-sale securities:
Listed equity securities		51,747		1,667		(9,856	)		-		43,558
Bank financial products		14,505		-		-			-		14,505
Others		500		-		-			-		500
Short-term investment	$	67,005	$	1,759	$	(10,028	)	$	-	$	58,736

	As of December 31, 2015
	Original cost		Gross unrealized gains		Gross unrealized losses			Provision for decline in value		Fair value
Short-term investment:
Trading securities	$	173	$	60	$	(53	)	$	-	$	180
Available-for-sale securities:
Bank financial products		31,868		-		-			-		31,868
Others		500		-		-			-		500
Short-term investment	$	32,541	$	60	$	(53	)	$	-	$	32,548

Summarized financial information of equity method investments

	December 31,
	2014		2015
Current assets	$	178,320	$	907,296
Non-current assets	$	75,211	$	125,256
Current liabilities	$	35,170	$	115,459
Non-current liabilities	$	2,592	$	19,789

	For the years ended December 31,
	2013			2014			2015
Total revenues	$	4,394		$	67,123		$	324,701
Gross profits	$	3,790		$	19,654		$	71,623
Loss from operations	$	(13,196	)	$	(47,990	)	$	(150,387	)
Net loss	$	(13,208	)	$	(47,984	)	$	(149,604	)

Long-term Investments, Available-for-sale Investments

	As of December 31, 2014
	Original cost		Gross unrealized gains		Gross unrealized losses			Provision for decline in value		Fair value
Long-term investment:
Available-for-sale securities:
Listed equity securities	$	57,335	$	9,988	$	(19,679	)	$	-	$	47,644

	As of December 31, 2015
	Original cost		Gross unrealized gains		Gross unrealized losses			Provision for decline in value		Fair value
Long-term investment:
Available-for-sale securities:
Listed equity securities	$	30,207	$	7,543	$	(9,337	)	$	-	$	28,413
Debt Securities	$	7,471	$	-	$	-		$	-	$	7,471