Share-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Summary of Share-Based Compensation Expense

The amount of share-based compensation expense recognized by the Company by location in its statements of operations for the three months ended March 31, 2019 and 2018 is as follows (in thousands):

	Three Months ended March 31,
	2019		2018
Cost of revenues	$	10	$	4
Sales and marketing		204		54
General and administrative		218		55
Research and development		69		31
Total	$	501	$	144

Summary of Stock Option Activity

The following table summarizes the Company’s stock option activity for the three months ended March 31, 2019:

	Number of Shares under Option (in thousands)			Weighted- average Exercise Price per Option		Weighted- average Remaining Contractual Life (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2018		2,711		$	3.59
Granted		476		$	16.49
Exercised		(483	)	$	2.97
Forfeited		(34	)	$	9.88
Outstanding at March 31, 2019		2,670		$	5.92		7.9	$	26,014
Exercisable at March 31, 2019		1,286		$	2.14		6.7	$	16,859
Vested and expected to vest at March 31, 2019		2,670		$	5.92		7.9	$	26,014

Summary of Weighted-average Inputs and Assumptions used to Estimate Grant-date Fair Value of Stock Options

For the three months ended March 31, 2019, the grant-date fair value of stock options was estimated at the time of grant using the following weighted-average inputs and assumptions in the Black-Scholes option pricing model:

Estimated fair value of common stock	$	16.49
Exercise price	$	16.49
Expected term (in years)		6.1
Risk-free interest rate		2.5	%
Expected volatility		55.3	%
Dividend yield		0	%

Summary of Restricted Stock Award and Restricted Stock Unit Activity

The following table summarizes the Company’s restricted stock award and restricted stock unit activity for the three months ended March 31, 2019:

	Non-vested Restricted Stock Awards (in thousands)			Weighted- average Grant-date Fair  Value		Non-vested Restricted Stock Units (in thousands)		Weighted- average Grant-date Fair  Value
Non-vested at December 31, 2018		4		$	2.32		43	$	25.21
Granted		-		$	-		123	$	16.42
Vested		(3	)	$	2.32		-	$	-
Non-vested at March 31, 2019		1		$	2.32		166	$	18.69