Net Income Per Share (Tables)

12 Months Ended

Dec. 31, 2014

Net Income Per Share [Abstract]

Computation of Basic and Diluted Net Income per Share

	2012		2013		2014
Net income attributable to Qihoo 360 Technology Co. Ltd		46,746		99,652		222,768
Undistributed earnings allocated to participating unvested shares (i)		2,049		3,175		3,848
Net income attributable to Class A and Class B ordinary shareholders for computing basic net income per ordinary share		44,697		96,477		218,920
Net income attributable to nonvested shareholders for computing basic net income per participating unvested shares (i)		2,049		3,175		3,848
Weighted average ordinary shares outstanding used in computing basic net income per Class A and Class B ordinary share		168,709,221		174,727,288		181,909,716
Weighted average shares used in calculating net income per participating unvested share-basic		7,733,645		5,749,393		3,197,500
Effect of dilutive securities:
Plus incremental weighted average ordinary shares from assumed exercise of stock options and nonvested shares using the treasury stock method		7,180,369		12,560,169		12,384,156
Weighted average ordinary shares outstanding used in computing diluted net income per Class A and Class B ordinary share (i)		183,623,235		193,036,850		197,491,372
Net income per Class A and Class B ordinary share-basic		0.26		0.55		1.20
Net income per participating unvested share-basic		0.26		0.55		1.20
Net income per Class A and Class B ordinary share-diluted		0.25		0.52		1.13

(i) The net income attributable to Qihoo 360 Technology Co. Ltd. was allocated among Class A and Class B ordinary shares, and certain nonvested shares pro rata on the basis of their right to participate in dividends.