Equity and Employee Stock Plans (Tables)

3 Months Ended

Mar. 31, 2019

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

Schedule of Reserved Shares of Common Stock

The Company has reserved shares of common stock, on an as-converted basis, for future issuance as follows:

	March 31, 2019	December 31, 2018
Equity Incentive Plans
Stock options outstanding	8,713,162	9,435,349
Restricted stock units outstanding	3,588,275	3,264,702
Shares available for future equity grants	9,199,286	5,068,013
Total	21,500,723	17,768,064
2017 Employee Stock Purchase Plan
Shares available for purchase on January 1, 2019 and 2018, respectively	2,890,973	2,414,688
Shares issued since January 1, 2019 and 2018, respectively	—	425,228
Total shares available for future purchases	2,890,973	1,989,460

Schedule of Stock Option Activity

The following table summarizes activity for stock options for the three months ended March 31, 2019:

	Number Of Options	Weighted- Average Exercise Price		Weighted-Average Remaining Contractual Life (years)	Aggregate Intrinsic Value
Outstanding at December 31, 2018	9,435,349	$	6.48	6.06	$	74,669
Options exercised	(679,495)	5.49
Options forfeited	(40,550)	9.15
Options canceled	(2,142)	8.35
Outstanding at March 31, 2019	8,713,162	6.55		6.00	119,575
Options exercisable at March 31, 2019	7,258,130	$	6.01	5.69	$	103,486

Schedule of Nonvested Restricted Stock Units Activity

The following table summarizes activity for restricted stock units for the three months ended March 31, 2019:

	Restricted Stock Units		Weighted Average Grant-Date Fair Value
Unvested outstanding at December 31, 2018	3,264,702		$	19.68
Granted	569,915		19.61
Vested	(139,889	)	20.99
Forfeited or canceled	(106,453	)	19.48
Unvested outstanding at March 31, 2019	3,588,275		$	19.62

Schedule of Allocation of Share-based Compensation Costs

The following table presents detail of stock-based compensation, net of the amount capitalized in internally developed software, included in the Company’s condensed consolidated statements of operations for the periods indicated below

	Three Months Ended March 31,
	2019		2018
Cost of revenue	$	1,465	$	1,300
Technology and development	2,656		1,473
Marketing	286		119
General and administrative	1,999		1,304
Total stock-based compensation	$	6,406	$	4,196