Stock-based Awards (Tables)

3 Months Ended

Mar. 31, 2017

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

Summary of stock option activity

A summary of the Company’s stock option activity for the three months ended March 31, 2017 is as follows:

	Number of Options		Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Life
					(in years)
Outstanding at December 31, 2016	24,541,512		$	8.29	5.49
Granted	350,010		13.94
Exercised	(2,637,730	)	3.16
Canceled/forfeited	(431,062	)	7.99
Outstanding at March 31, 2017	21,822,730		$	9.01	5.66

Schedule of activity in connection with restricted stock

Activity in connection with restricted stock units is as follows for the three months ended March 31, 2017:

	Number of Shares		Weighted- Average Grant Date Fair Value
Non-vested — December 31, 2016	4,339,320		$	7.85
Granted	185,242		14.03
Vested	(348,349	)	8.18
Canceled/forfeited	(161,112	)	7.14
Non-vested — March 31, 2017	4,015,101		$	8.13

Schedule of stock-based compensation cost relating to stock options and restricted stock awards

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   March 31,
	2017		2016
Cost of revenue	$	203	$	222
Sales and marketing	1,745		763
Technology and development	1,298		1,079
General and administrative	2,661		3,828
Total stock-based compensation expense	5,907		5,892
Amount capitalized to internal software use	218		245
Total stock-based compensation cost	$	6,125	$	6,137