STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Summary of Stock Option Activity

The table below represents stock option award activity for the three months ended March 31, 2021:

	Outstanding	Exercisable
January 1, 2021	1,140,975	955,302
Granted/Vested	5,000	20,817
Exercised	(104,465)	(104,465)
Cancelled or expired	(5,152)	—
March 31, 2021	1,036,358	871,654

Schedule of Share-based Compensation, Restricted Stock Activity

The table below represents restricted stock activity for the three months ended March 31, 2021:

	Number of Restricted Share Units
Outstanding at January 1, 2021	3,038,785
Granted	1,434,007
Vested	(195,000)
Forfeited	(14,447)
Outstanding at March 31, 2021	4,263,345

Schedule of Stock-based Compensation

Total stock-based compensation recorded in the condensed consolidated statements of comprehensive loss is allocated as follows (in thousands): 

	Three Months Ended March 31,
	2021		2020
Research and development	$	972	$	648
Sales, marketing and administration	$	1,175	$	731
Total stock-based compensation	$	2,147	$	1,379