STOCK-BASED COMPENSATION (Tables)

9 Months Ended

12 Months Ended

Sep. 30, 2021

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

The following table summarizes changes in the number of outstanding stock options under the 2011 Plan over the period December 31, 2020 to September 30, 2021:

The following table summarizes changes in the number of outstanding stock options under the 2011 Plan over the period December 31, 2020 to September 30, 2021:

				Weighted average
		Weighted average		remaining
		exercise price		contractual term
	Options	per share		in years
Outstanding – December 31, 2020	1,173,190	$	6.52	3.35
Awarded	—		—
Exercised	(799,390)		4.70
Forfeited	(373,800)		10.43
Outstanding – September 30, 2021	—		—	—
Exercisable at September 30, 2021	—	$	—	—
Expected to vest September 30, 2021	—		—	—

The following table summarizes changes in the number of outstanding stock options under the Director Plan, Stock Plan and the 2011 Incentive Plan during the two years ended December 31, 2020.

				Weighted average		Weighted average
				exercise price		remaining
	Options			per share		contractual term
Outstanding – December 31, 2018		1,380,492		$	7.56	4.18 years
Awarded		100,769			2.69
Exercised		(151,950	)		4.08
Forfeited		(198,839	)		9.33
Outstanding – December 31, 2019		1,130,472			7.28	3.48 years
Awarded		191,301			5.10
Exercised		(8,000	)		2.64
Forfeited		(140,583	)		10.90
Outstanding – December 31, 2020		1,173,190			6.52	3.35 years
Exercisable at December 31, 2020		877,926		$	7.20	2.59 years
Expected to vest December 31, 2020		1,173,190		$	6.52	3.35 years

The following table summarizes the changes in the number of deferred stock shares under the 2011 Plan over the period December 31, 2020 to September 30, 2021:

The following table summarizes the changes in the number of deferred stock shares under the 2011 Plan over the period December 31, 2020 to September 30, 2021:

		Weighted Average
		Grant Date
	Shares	Fair Value
Outstanding – December 31, 2020	272,695	$	3.91
Granted	—		—
Vested	(194,586)		4.05
Forfeited	(78,109)		3.56
Outstanding – September 30, 2021	—		—

The following table summarizes the changes in the number of deferred stock shares under the Stock Plan and 2011 Incentive Plan over the period from December 31, 2018 to December 31, 2020:

				Weighted Average
				Grant Date
	Shares			Fair Value
Outstanding – December 31, 2018		270,066		$	4.48
Granted		161,107			2.76
Vested		(4,575	)		4.56
Forfeited		(105,371	)		3.90
Outstanding – December 31, 2019		321,227			3.37
Granted		95,631			5.33
Vested		(57,952	)		2.81
Forfeited		(86,211	)		4.22
Outstanding – December 31, 2020		272,695			3.91