Stock Incentive Plan (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity

A summary of the stock option activity is as follows:

	Options	Weighted Average Exercise Price	Weighted Average Remaining Contractual Life	Aggregate Intrinsic Value (in thousands)
Outstanding, December 31, 2020	3,516,484	$12.79	5.93	$	25,718
Granted	629,348	$20.20
Exercised	(698,150)	$5.74
Cancelled	(173,001)	$16.75
Outstanding, September 30, 2021	3,274,681	$15.46	6.59	$	12,878
Exercisable, September 30, 2021	1,890,173	$14.42	5.05	$	9,324

Schedule of Weighted-Average Assumptions for Options Granted

The Company used the following weighted-average assumptions for options granted during the nine months ended September 30, 2021:

	Nine Months Ended September 30, 2021
Expected term (in years)	5.88
Expected volatility	58.41	%
Risk free rate	1.01	%
Expected dividends	—	%

Summary of Stock Unit Activity

A summary of the status of non-vested RSUs/PSUs as of September 30, 2021 and the changes during the nine months then ended are presented below:

	Outstanding Stock Units
	Stock Units	Weighted-Average Fair Value at Date of Grant per Share		Weighted Average Remaining Vesting Life	Aggregate Intrinsic Value (in thousands)
Unvested, December 31, 2020	1,782,905	$	15.23	1.83	$	31,825
Granted	863,014	$	20.56
Released	(206,193)	$	16.68
Forfeited	(250,710)	$	16.22
Unvested, September 30, 2021	2,189,016	$	17.08	1.69	$	34,586