Equity Incentive Plans (Tables)

6 Months Ended

Jun. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

Stock option activity during the six months ended June 30, 2018 was as follows (in thousands, except per share and contractual life data):

						Weighted-
				Weighted-		Average
				Average		Remaining		Total
	Options			Exercise Price		Contractual		Intrinsic
	Outstanding			per Share		Life (years)		Value
Outstanding at December 31, 2017		7,490		$	10.76
Options granted		—			—
Options exercised		(1,747	)		7.98
Options forfeited or canceled		(224	)		15.36
Outstanding at June 30, 2018		5,519		$	11.46		6.33	$	136,542
Vested and expected to vest at June 30, 2018		5,390		$	11.38		6.29	$	133,804
Exercisable at June 30, 2018		3,804		$	9.90		5.63	$	100,037

Summary of RSU Activity Under 2016 Plan

RSU activity under the 2016 Plan during the six months ended June 30, 2018 was as follows (in thousands, except per share data):

				Weighted-Average
	RSUs			Grant Date Fair Value
	Outstanding			per Share
Non-Vested outstanding at December 31, 2017		2,030		$	16.15
Granted		1,124			31.37
Vested		(400	)		14.84
Forfeited or canceled		(187	)		18.42
Non-Vested outstanding at June 30, 2018		2,567		$	22.85

Summary of Stock Based Compensation Expenses

Stock-based compensation expense recognized in the Company’s statement of operations was as follows (in thousands):

	Three Months Ended  June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Cost of revenue
Subscription	$	289	$	240	$	608	$	597
Professional services		479		230		807		548
Operating expenses
Research and development		1,399		1,112		2,792		2,153
Sales and marketing		1,706		1,077		3,136		2,077
General and administrative		1,706		1,026		3,188		1,935
Total stock-based compensation	$	5,579	$	3,685	$	10,531	$	7,310