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SHAREHOLDERS' EQUITY (Tables)

12 Months Ended

Dec. 31, 2022

Summary of information about stock options under the Plan

​

​	​	​	​	​	​	​	​	​	​	​	​
​		​		​	​		Weighted		​	​
​	​	​	​	Weighted		​	Average	​	​	​
​	​	​	​	Average		​	Remaining	​	​	​
​	​	Number of	​	Exercise		​	Contractual	​	Intrinsic
​	​	Shares	​	Price		​	Life (Years)	​	Value
​	​	(in thousands, except per share and year data)
Balance at December 31, 2019		527	​	$	20.02		3.0	​	$	364	​
Granted		510	​	​	12.24	​	—	​	​	—	​
Exercised		(14)	​	​	10.20	​	—	​	​	10	​
Forfeited	​	(197)	​	​	21.79	​	—	​	​	2	​
Expired	​	(125)	​	​	11.85	​	—	​	​	—	​
Balance at December 31, 2020		701	​	$	15.51		4.2	​	$	53	​
Granted		95	​	​	12.21	​	—	​	​	—	​
Exercised		—	​	​	—	​	—	​	​	10	​
Forfeited		(159)	​	​	14.56	​	—	​	​	2	​
Expired		(20)	​	​	71.00	​	—	​	​	—	​
Balance at December 31, 2021		617	​	$	13.43		4.2	​	$	53	​
Forfeited		(159)	​	​	12.27	​	—	​	​	2	​
Expired	​	(10)	​	​	27.80	​	—	​	​	—	​
Balance at December 31, 2022		448	​	$	13.43		2.6	​	$	—	​
Exercisable at December 31, 2022		321	​	$	13.81		2.6	​	$	—	​

​

Schedule of weighted-average assumptions used for estimation of the fair value of the options granted under the Plan at the date of grant, using the Black-Scholes Option Valuation Model

​

​	​	​	​	​	​	​	​
​	2022		​	2021		​	2020
Risk-free interest rate	-	​	​	0.519% to 0.873%	​	​	0.157% to 0.322%
Dividend yield	-	​	​	0.00%	​	​	0.00%
Volatility factor of the expected market price of common stock	-	​	​	63%	​	​	59%
Weighted-average expected life of option	-	​	​	3.5 years	​	​	3.5 years
Weighted-average grant date fair value	-	​	$	1.22	​	$	1.22

​

Summary of status and activity of non-vested stock options

​

​	​	​	​	​	​
​	​	​	​	Weighted Average
​	​	​	​	Grant Date
​	​	Number of	​	Fair Value
​		Shares		Per Share
​	​	(in thousands, except per share amounts)
Non-vested, beginning of year	​	390	​	$	4.26
Granted	​	—	​	$	-
Cancelled/Forfeited	​	(99)	​	$	4.16
Vested	​	(165)	​	$	4.40
Non-vested, end of year	​	126	​	$	4.15

November 2019 Offering

Schedule of Black-Scholes pricing model to determine the fair value of warrants

​

​	​	​	​	​	​	​	​
​	​	​	​	​	November 20, 2019		​
Risk-free interest rate	​	​	​	​	​	1.55	%
Dividend yield	​	​	​	​	​	0.00	%
Volatility factor of the expected market price of common stock	​	​	​	​	​	60	%
Weighted-average expected life	​	​	​	​	​	5 years	​
Weighted-average grant date fair value	​	​	​	​	$	0.52	​

​

X

- Definition

Tabular disclosure of input and valuation technique used to measure fair value and change in valuation approach and technique for each separate class of asset and liability measured on recurring and nonrecurring basis.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)
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Tabular disclosure of the changes in outstanding nonvested shares.

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Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value.

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Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions.

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