v3.19.1

Stock-Based Compensation (Tables)

12 Months Ended

Dec. 31, 2018

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

Schedule of Stock Option Grants Valuation Assumptions

The relevant data used to determine the value of the stock option grants for employees and directors for the years ended December 31, 2018 and 2017 is as follows, presented on a weighted-average basis:

		Year Ended December 31,
		2018				2017
Risk-free interest rate			2.79	%			2.03	%
Expected volatility			49.66	%			47.00	%
Expected dividend yield			0	%			0	%
Expected term (in years)			5.73				6.08

Schedule of Stock Options Activity

The following table summarizes the Company’s option activity since December 31, 2017:

		Number of Shares				Weighted Average Exercise Price				Weighted Average Remaining Contractual Term				Aggregate Intrinsic Value
										(in years)				(in thousands)
Outstanding as of December 31, 2017			3,535,560			$	4.74				7.30			$	8,895
Granted			1,342,840				10.40
Exercised			(601,018	)			1.43
Forfeited			(507,296	)			7.51
Outstanding as of December 31, 2018			3,770,086			$	6.91				7.44			$	1,956
Vested and expected to vest as of December 31, 2018			3,436,473			$	6.70				7.34			$	1,938
Options exercisable as of December 31, 2018			1,910,882			$	4.90				6.36			$	1,938

Schedule of Unvested Restricted Stock Units

The following table summarizes the Company’s RSU activity since December 31, 2017:

		Number of Shares				Weighted Average     Grant-Date Fair Value
Unvested balance December 31, 2017			242,496			$	6.90
Granted			2,378,578				16.76
Vested			(208,081	)			14.40
Forfeited			(3,100	)			14.75
Unvested balance December 31, 2018			2,409,893			$	15.98

Summary of Stock-Based Compensation Expense of Statements of Operations and Comprehensive Loss

The Company recorded stock-based compensation expense in the following expense categories of its statements of operations and comprehensive loss (in thousands):

		Year Ended December 31,
		2018				2017
Cost of revenue		$	42			$	27
Sales and marketing			1,955				789
Research and development			2,011				467
General and administrative			3,113				577
		$	7,121			$	1,860

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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Tabular disclosure of the allocation of equity-based compensation costs to a given line item on the balance sheet and income statement for the period. This may include the reporting line for the costs and the amount capitalized and expensed.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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