Stock-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2019

Schedule of Restricted Stock Units Activity

A summary of the activity and related information of the restricted stock units issued during the nine months ended September 30, 2019 is presented below:

	Restricted Stock Units			Weighted Average Grant Date Fair Value
Outstanding at December 31, 2018		1,494,111		$	26.91
Granted		297,798			3.97
Vested and released		(709,537	)		28.94
Forfeited		(60,395	)		9.61
Outstanding at September 30, 2019		1,021,977		$	20.17

Schedule of Stock-based Compensation Expense Recorded in Operating Expenses

Stock-based compensation expense recorded in operating expenses was as follows (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Selling, general and administrative	$	6,603	$	1,370	$	19,286	$	5,328
Research and development		254		83		1,440		992
Stock-based compensation in operating expenses	$	6,857	$	1,453	$	20,726	$	6,320

Communicated Option Awards [Member]

Schedule of Options Activity

A summary of the activity and related information of the Communicated Option Awards classified as liabilities and communicated during the nine months ended September 30, 2018, is presented below:

	Liability- Classified Awards (in shares)			Weighted Average Exercise Price		Weighted Average Remaining Life (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2017		933,500		$	3.92		3.57	$	19,676
Granted		170,000			25.00
Forfeited		(67,000	)		5.33
Cancelled and settled with Replacement Awards		(1,036,500	)		7.29				22,442
Outstanding at September 30, 2018		—		$	—		—	$	—
Exercisable at September 30, 2018		—		$	—		—	$	—
Vested and expected to vest at September 30, 2018		—		$	—		—	$	—

Schedule of Fair Value of Options Using the Black Scholes Option Pricing Model and Assumptions Used

The fair value of the Communicated Option Awards was estimated using the Black Scholes option pricing model and the assumptions used in the model are noted in the following table:

	Nine Months Ended September 30,
	2018
Risk-free interest rate		2.49	%
Volatility		34.13	%
Expected dividend yield		0.00	%
Expected life		2.9

Stock Options [Member]

Schedule of Options Activity

A summary of the activity and related information of the stock options issued during the nine months ended September 30, 2019 is presented below:

	Stock Options			Weighted Average Exercise Price		Weighted Average Remaining Life (in years)		Aggregate Intrinsic Value (in thousands)
Outstanding at December 31, 2018		1,920,100		$	28.59		9.43	$	—
Granted		—			—
Forfeited		(50,973	)		19.15
Outstanding at September 30, 2019		1,869,127		$	28.85		7.09	$	—
Exercisable at September 30, 2019		917,896		$	28.94		6.78	$	—
Vested and expected to vest at September 30, 2019		1,869,127		$	28.85		7.09	$	—

Schedule of Fair Value of Options Using the Black Scholes Option Pricing Model and Assumptions Used

The fair value of the stock options issued under the Compensation Plan was estimated using the Black Scholes option pricing model and the weighted-average assumptions used in the model are noted in the following table:

	Nine Months Ended September 30,
	2018
Risk-free interest rate		2.84	%
Volatility		42.18	%
Expected dividend yield		0.00	%
Expected life		6.0