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Note 5 - Stock-based Compensation | 9 Months Ended
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Sep. 30, 2023
Notes to Financial Statements |
Shareholders' Equity and Share-Based Payments [Text Block] |
5. | STOCK-BASED COMPENSATION
We recorded non-cash stock compensation expense in each period as follows:
|  | Three-month period ended |  |  | Nine-month period ended |
|  | September 30, 2023 |  |  | September 30, 2022 |  |  | September 30, 2023 |  |  | September 30, 2022 |
Stock options |  | $ | 130 |  |  | $ | 176 |  |  | $ | 421 |  |  | $ | 538 |
Restricted stock |  |  | 1 |  |  |  | 3 |  |  |  | 3 |  |  |  | 14 |
Total |  | $ | 131 |  |  | $ | 179 |  |  | $ | 424 |  |  | $ | 552 |
We have stock options outstanding from various stock-based employee compensation plans for which we record compensation cost relating to share-based payment transactions in our financial statements. As of September 30, 2023, there was $314 of total unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted average period of 0.9 years. The following table summarizes stock option activity for the nine-month period ended September 30, 2023:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2023 |  |  | 1,425,693 |  |  | $ | 6.72 |  |  |  |  |  |  |  |  |
Granted |  |  | 12,500 |  |  | $ | 4.07 |  |  |  |  |  |  |  |  |
Exercised |  |  | (204,891 | ) |  | $ | 5.71 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (144,690 | ) |  | $ | 5.01 |  |  |  |  |  |  |  |  |
Outstanding at September 30, 2023 |  |  | 1,088,612 |  |  | $ | 7.11 |  |  |  | 3.54 |  |  | $ | 2,898 |
Vested and expected to vest at September 30, 2023 |  |  | 1,009,489 |  |  | $ | 7.20 |  |  |  | 3.37 |  |  | $ | 2,598 |
Exercisable at September 30, 2023 |  |  | 703,529 |  |  | $ | 7.79 |  |  |  | 2.36 |  |  | $ | 1,402 |
Cash received from stock option exercises under our stock-based compensation plans for the three-month periods ended September 30, 2023 and September 30, 2022 was $979 and $3, respectively. Cash received from stock option exercises under our stock-based compensation plans for the nine-month periods ended September 30, 2023 and September 30, 2022 was $1,041 and $116, respectively. Outstanding restricted shares vest in equal annual installments over three (3) years. Unrecognized compensation cost related to outstanding restricted shares at September 30, 2023 was $0.

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- Definition The entire disclosure for shareholders' equity and share-based payment arrangement. Includes, but is not limited to, disclosure of policy and terms of share-based payment arrangement, deferred compensation arrangement, and employee stock purchase plan (ESPP). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 505 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//505/tableOfContent Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org//718/tableOfContent + Details
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