Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2018

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Stock Option Activity

Stock option activity during the nine months ended September 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		(2,148	)		8.40
Options forfeited or canceled		(314	)		15.03
Outstanding at September 30, 2018		5,028		$	11.51		6.13	$	127,969
Vested and expected to vest at September 30, 2018		4,923		$	11.43		6.10	$	125,678
Exercisable at September 30, 2018		3,628		$	10.11		5.53	$	97,415

Summary of RSU Activity Under 2016 Plan

RSU activity under the 2016 Plan during the nine months ended September 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		1,228			31.88
Vested		(514	)		14.90
Forfeited or canceled		(311	)		19.91
Non-Vested outstanding at September 30, 2018		2,433		$	23.90

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 September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Cost of revenue
Subscription	$	286	$	330	$	894	$	927
Professional services		507		294		1,314		842
Operating expenses
Research and development		1,516		1,179		4,308		3,332
Sales and marketing		2,050		1,239		5,186		3,316
General and administrative		1,796		1,315		4,984		3,250
Total stock-based compensation	$	6,155	$	4,357	$	16,686	$	11,667