Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2021

The following table summarizes the activity for stock options and warrants for the three months ended March 31, 2021:


	Stock Options						Warrants
	Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)		Shares	Weighted Average Exercise Price		Weighted Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In Thousands)
Outstanding at December 31, 2020	963,700	$	14.64	5.86	$	—	2,638,355	$	2.18	4.98	$	—

Changes during the period:
Granted	155,150	1.60					19,519,393	2.90
Exercised	(7,250)	3.28					(801,148)	2.19
Forfeited	(7,017)	2.20					—	—
Expired	(82,359)	6.54					—	—
Outstanding at March 31, 2021	1,022,224	$	13.48	6.67	$	—	21,356,600	$	2.84	4.98	$	—
Vested at March 31, 2021 or expected to vest in the future	996,573	$	13.77	6.60	$	—	21,356,600	$	2.84	4.98	$	—
Vested at March 31, 2021	765,479	$	17.08	5.87	$	—	21,356,600	$	2.80	4.98	$	—

Schedule of Restricted Stock Activity

During the three months ended March 31, 2021 and 2020, the Company issued restricted stock for services as follows ($ in thousands):


	Three Months Ended March 31,
	2021		2020
Number of restricted stock issued	300,450		156,184
Value of restricted stock issued	$	478	$	512

Schedule of Restricted Stock Units Activity

During the three months ended March 31, 2021 and 2020, the Company issued restricted stock units for services as follows ($ in thousands, except share data):


	Three Months Ended March 31,
	2021		2020
Number of restricted stock units issued	458,245		195,320
Value of restricted stock units issued	$	729	$	623