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STOCK-BASED COMPENSATION (Tables)

6 Months Ended

Jun. 30, 2023

STOCK-BASED COMPENSATION

Schedule of weighted-average assumptions used in Black-Scholes option pricing model

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​	​	​	​	​	​	​	​	​	​	​	​	​	​	​
​		Three Months Ended June 30,					​		Six Months Ended June 30,
​		2023			2022			​	2023			2022		​
Risk-free interest rate	​		3.75	%		2.89	%	​		3.93	%	​	2.63	%
Expected volatility	​		79.29	%		75.09	%	​		79.45	%		74.66	%
Expected term (years)	​		5.26	​		5.57	​	​		5.70	​		5.62	​
Expected dividend yield	​	​	0.00	%	​	0.00	%	​	​	0.00	%		0.00	%
Fair value, per share	​	$	0.11	​	$	0.70	​	​	$	0.20	​	$	1.34	​

Schedule of stock-based compensation expense

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Three Months Ended

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Six Months Ended

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June 30,

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June 30,

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2023

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2022

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2023

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2022

Cost of sales

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$

5

​

$

4

​

$

9

​

$

7

Selling, general and administrative

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339

​

224

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659

​

​

470

Research and development

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76

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(49)

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​

157

​

​

104

Total stock-based compensation expense

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$

420

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$

179

​

$

825

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$

581

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- References

No definition available.

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- Definition

Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 718
-SubTopic 10
-Subparagraph (f)(2)
-Name Accounting Standards Codification
-Paragraph 2
-Section 50
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

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