Segments and Geographic Information (Tables)

12 Months Ended

Dec. 31, 2014

Segments and Geographic Information [Abstract]

Components of Revenues

	For the years ended December 31,
	2012			2013			2014
Revenues:
Internet services	$	328,882		$	671,088		$	1,370,695
Others		150			-			19,965
		329,032			671,088			1,390,660
Cost of revenues:
Internet services		(32,762	)		(87,838	)		(297,645	)
Others		(40	)		-			(7,817	)
		(32,802	)		(87,838	)		(305,462	)
Gross profit:
Internet services		296,120			583,250			1,073,050
Others		110			-			12,148
		296,230			583,250			1,085,198
Operating expenses:
Product development		(156,269	)		(255,248	)		(406,250	)
Selling and marketing		(58,178	)		(110,104	)		(333,701	)
General and administrative		(35,643	)		(117,148	)		(94,260	)
Total operating expenses		(250,090	)		(482,500	)		(834,211	)
Subsidy income		2,570			2,349			8,506
Income from operations	$	48,710		$	103,099		$	259,493