Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2022

Share-Based Payment Arrangement [Abstract]

Summary of option activity

The following summarizes all option activity under the 2007 Plan, 2014 Plan and Inducement Plan:

				Weighted		Weighted average
				average		remaining
	Option			exercise		contractual
	Shares			price		term (year)
Balances at December 31, 2021		1,703,963		$	4.75		5.41
Granted		150,000
Forfeited		(73,637	)		5.10
Balances at June 30, 2022		1,780,326		$	4.34		5.51

Summary of RSUs activity

Activity related to RSUs is set forth below:

				Weighted average
	Number			grant date
	of shares			fair value
Balances at December 31, 2021		2,799,552		$	8.11
Granted		3,333,797			2.22
Vested		(596,101	)		5.46
Forfeited		(167,383	)
Balances at June 30, 2022		5,369,865		$	5.00