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Note 11 - Stock-based Compensation Plan (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Cost of revenues |  | $ | 37 |  |  | $ | 29 |  |  | $ | 68 |  |  | $ | 48 |
Selling expense |  |  | 14 |  |  |  | 11 |  |  |  | 25 |  |  |  | 21 |
Engineering and product development expense |  |  | 8 |  |  |  | 9 |  |  |  | 12 |  |  |  | 19 |
General and administrative expense |  |  | 505 |  |  |  | 556 |  |  |  | 808 |  |  |  | 991 |
|  | $ | 564 |  |  | $ | 605 |  |  | $ | 913 |  |  | $ | 1,079 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | 2024 |  |  | 2023 |
Risk-free interest rate |  |  | 3.98 | % |  |  | 3.93 | %
Dividend yield |  |  | 0.00 | % |  |  | 0.00 | %
Expected common stock market price volatility factor |  |  | .57 |  |  |  | .57 |
Weighted average expected life of stock options (years) |  |  | 6.25 |  |  |  | 6.25 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Exercise Price |
Options outstanding, January 1, 2024 (171,735 exercisable) |  |  | 505,006 |  |  | $ | 10.46 |
Granted |  |  | 165,364 |  |  |  | 11.33 |
Exercised |  |  | (26,080 | ) |  |  | 4.45 |
Canceled |  |  | (23,401 | ) |  |  | 10.27 |
Options outstanding, June 30, 2024 (266,310 exercisable) |  |  | 620,889 |  |  |  | 10.95 |
Nonvested Restricted Stock Shares Activity [Table Text Block] |
|  | Number of Shares |  |  | Weighted Average Grant Date Fair Value |
Unvested shares outstanding, January 1, 2024 |  |  | 189,784 |  |  | $ | 11.51 |
Granted |  |  | 138,838 |  |  |  | 11.38 |
Vested |  |  | (66,804 | ) |  |  | 10.96 |
Forfeited |  |  | (11,200 | ) |  |  | 12.29 |
Unvested shares outstanding, June 30, 2024 |  |  | 250,618 |  |  |  | 11.55 |

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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 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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 + Details
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