Stock Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of activity of stock incentive and equity plans

	Shares available for grant			Number of options outstanding			Weighted- average option exercise price		Number of restricted stock and board shares issued		Number of RSUs outstanding
At January 1, 2021		296,105			20,100		$	9.71		99,570		48,753
Granted		(38,330	)		—			—		—		3,030
Exercised/issued		—			(11,250	)		6.10		—		(3,750	)
Cancelled/forfeited		61,860			(50	)		44.10		—		(45,003	)
At September 30, 2021		319,635			8,800		$	14.13		99,570		3,030

Schedule of restricted stock units

	RSUs outstanding			Weighted average price at time of grant		Aggregate intrinsic value
Non-vested RSUs as of January 1, 2021		48,753		$	6.31
Granted		3,030			9.90
Vested		(3,750	)		—
Cancelled		(45,003	)		6.20
Non-vested RSUs at September 30, 2021		3,030		$	9.90	$	30,000