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Note 6 - Stock-based Compensation | 6 Months Ended
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Jun. 30, 2025
Notes to Financial Statements |
Shareholders' Equity and Share-Based Payments [Text Block] |
6. | STOCK-BASED COMPENSATION
We recorded non-cash stock compensation expense in each period as follows:
|  | Three-month period ended |  |  | Six-month period ended |
|  | June 30, |  |  | June 30, |  |  | June 30, |  |  | June 30, |
|  | 2025 |  |  | 2024 |  |  | 2025 |  |  | 2024 |
Stock options |  | $ | 190 |  |  | $ | 152 |  |  | $ | 378 |  |  | $ | 308 |
Restricted stock |  |  | 45 |  |  |  | 7 |  |  |  | 84 |  |  |  | 12 |
Total |  | $ | 235 |  |  | $ | 159 |  |  | $ | 462 |  |  | $ | 320 |
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 June 30, 2025, there was $733 of total unrecognized compensation cost related to outstanding stock options, which is expected to be recognized over a weighted average period of 1.1 years. The following table summarizes stock option activity for the six-month period ended June 30, 2025:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Remaining Contractual Term (years) |  |  | Aggregate Intrinsic Value |
Outstanding at January 1, 2025 |  |  | 1,106,436 |  |  | $ | 7.15 |  |  |  |  |  |  |  |  |
Granted |  |  | - |  |  |  | - |  |  |  |  |  |  |  |  |
Exercised |  |  | (9,367 | ) |  |  | 6.52 |  |  |  |  |  |  |  |  |
Forfeited or expired |  |  | (99,005 | ) |  | $ | 9.26 |  |  |  |  |  |  |  |  |
Outstanding at June 30, 2025 |  |  | 998,064 |  |  | $ | 6.95 |  |  |  | 4.34 |  |  | $ | 2,025 |
Vested and expected to vest at June 30, 2025 |  |  | 900,507 |  |  | $ | 6.94 |  |  |  | 4.20 |  |  | $ | 1,835 |
Exercisable at June 30, 2025 |  |  | 540,052 |  |  | $ | 6.77 |  |  |  | 3.09 |  |  | $ | 1,192 |
Cash received from stock option exercises under our stock-based compensation plans for the three-month periods ended June 30, 2025 and June 30, 2024 was $61 and $1,251, respectively. Cash received from stock option exercises under our stock-based compensation plans for the six-month periods ended June 30, 2025 and June 30, 2024 was $61 and $1,936, respectively. Restricted stock awards vest in equal annual installments over three (3) years. Unrecognized compensation cost related to unvested restricted shares at June 30, 2025 and June 30, 2024, respectively, was $171 and $25.

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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://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/718/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 505 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/505/tableOfContent + Details
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