Stock-based Awards

9 Months Ended

Sep. 30, 2015

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Stock based awards

Stock-based Awards

Stock Options

A summary of the Company’s stock option activity for the nine months ended September 30, 2015 is as follows:

	Number of Options		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life
					(in years)
Outstanding at December 31, 2014	25,589,876		$	9.79	7.55
Granted	2,403,722		12.46
Exercised	(1,492,738	)	3.73
Canceled/forfeited	(974,257	)	11.19
Outstanding at September 30, 2015	25,526,603		$	10.34	7.00

At September 30, 2015, total remaining stock-based compensation expense for unvested stock option awards was $54.8 million, which is expected to be recognized over a weighted-average period of 2.7 years. For the three months ended September 30, 2015 and 2014, the Company recorded stock-based compensation expense for stock option awards of $6.2 million and $8.6 million, respectively. For the nine months ended September 30, 2015 and 2014, the Company recorded stock-based compensation expense for stock option awards of $20.5 million and $19.8 million, respectively.

Restricted Stock Units

Activity in connection with restricted stock units is as follows for the nine months ended September 30, 2015:

	Number of Shares		Weighted- Average Grant Date Fair Value
Non-vested — December 31, 2014	827,997		$	12.36
Granted	1,333,168		12.06
Vested	(364,801	)	14.58
Canceled/forfeited	(184,372	)	11.38
Non-vested — September 30, 2015	1,611,992		$	11.72

At September 30, 2015, total remaining stock-based compensation expense for non-vested restricted stock units is $16.6 million, which is expected to be recognized over a weighted-average period of 3.4 years. The Company recorded $1.4 million and $0.8 million in stock-based compensation expense for restricted stock units for the three months ended September 30, 2015 and 2014, respectively. The Company recorded $5.7 million and $1.2 million in stock-based compensation expense for restricted stock units for the nine months ended September 30, 2015 and 2014, respectively.

Stock-based Compensation Cost

The Company recorded stock-based compensation cost relating to stock options and restricted stock awards in the following categories on the accompanying consolidated statements of comprehensive loss (in thousands):

	Three Months Ended   September 30,				Nine Months Ended September 30,
	2015		2014		2015		2014
Cost of revenue	$	217	$	134	$	581	$	297
Sales and marketing	1,131		1,413		3,739		3,757
Technology and development	889		2,069		3,042		3,933
General and administrative	5,294		5,824		18,789		12,991
Total stock-based compensation expense	7,531		9,440		26,151		20,978
Amount capitalized to internal software use	389		331		1,064		947
Total stock-based compensation cost	$	7,920	$	9,771	$	27,215	$	21,925