Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Stock-Based Compensation

Schedule of weighted average assumptions for employee grants

	Nine Months Ended
	September 30,
Valuation assumptions:	2017		2016
Expected volatility	61.00	%	59.00	%
Expected term (years)	6.03		6.08
Risk-free interest rate	2.21	%	1.49	%
Dividend yield	—		—

Summary of stock option activity

				Weighted
		Weighted		average
		average		remaining	Aggregate
	Number	exercise		contractual	intrinsic
	of shares	price		term	value
Outstanding at December 31, 2016	3,059,690	$	5.14
Granted	1,044,556		14.43
Exercised	(1,054,764)		3.21
Forfeited	(49,629)		10.52
Outstanding at September 30, 2017	2,999,853	$	8.97	7.3	$	53,340
Options vested and expected to vest at September 30, 2017	2,999,853	$	8.97	7.3	$	53,340
Exercisable at September 30, 2017	1,393,742	$	3.37	5.3	$	32,572

Schedule of recorded stock-based compensation expense related to stock options

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2017		2016		2017		2016
Cost of revenue - product	$	138	$	27	$	359	$	85
Cost of revenue - service		91		7		203		21
Research and development		195		9		515		30
Sales and marketing		158		21		440		65
General and administrative		357		159		6,259		280
	$	939	$	223	$	7,776	$	481