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Note 14 - Segment Information (Tables) | 6 Months Ended
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Jun. 30, 2024
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electronic Test |  | $ | 16,159 |  |  | $ | 10,993 |  |  | $ | 27,275 |  |  | $ | 21,364 |
Environmental Technologies |  |  | 8,273 |  |  |  | 8,136 |  |  |  | 15,101 |  |  |  | 16,178 |
Process Technologies |  |  | 9,559 |  |  |  | 13,429 |  |  |  | 21,439 |  |  |  | 26,935 |
Total revenue |  | $ | 33,991 |  |  | $ | 32,558 |  |  | $ | 63,815 |  |  | $ | 64,477 |
Income from divisional operations: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Electronic Test |  | $ | 1,743 |  |  | $ | 2,641 |  |  | $ | 3,556 |  |  | $ | 5,219 |
Environmental Technologies |  |  | 993 |  |  |  | 943 |  |  |  | 1,008 |  |  |  | 1,956 |
Process Technologies |  |  | 970 |  |  |  | 2,592 |  |  |  | 2,931 |  |  |  | 5,268 |
Total income from divisional operations |  |  | 3,706 |  |  |  | 6,176 |  |  |  | 7,495 |  |  |  | 12,443 |
Corporate expenses |  |  | (2,473 | ) |  |  | (2,309 | ) |  |  | (5,175 | ) |  |  | (4,514 | )
Acquired intangible amortization |  |  | (897 | ) |  |  | (523 | ) |  |  | (1,492 | ) |  |  | (1,067 | )
Interest expense |  |  | (253 | ) |  |  | (176 | ) |  |  | (393 | ) |  |  | (358 | )
Other income (expense) |  |  | 213 |  |  |  | 197 |  |  |  | 648 |  |  |  | 255 |
Earnings before income tax expense |  | $ | 296 |  |  | $ | 3,365 |  |  | $ | 1,083 |  |  | $ | 6,759 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended June 30, |  |  | Six Months Ended June 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Revenue: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. |  | $ | 14,423 |  |  | $ | 9,912 |  |  | $ | 24,900 |  |  | $ | 21,002 |
Foreign |  |  | 19,568 |  |  |  | 22,646 |  |  |  | 38,915 |  |  |  | 43,475 |
|  | $ | 33,991 |  |  | $ | 32,558 |  |  | $ | 63,815 |  |  | $ | 64,477 |
Long-Lived Assets by Geographic Areas [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Property and equipment: |  |  |  |  |  |  |  |
U.S. |  | $ | 2,438 |  |  | $ | 2,502 |
Foreign |  |  | 2,091 |  |  |  | 688 |
|  | $ | 4,529 |  |  | $ | 3,190 |
Asset [Member] |
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | June 30, |  |  | December 31, |
|  | 2024 |  |  | 2023 |
Identifiable assets: |  |  |  |  |  |  |  |
Electronic Test |  | $ | 81,668 |  |  | $ | 32,505 |
Environmental Technologies |  |  | 21,827 |  |  |  | 16,772 |
Process Technologies |  |  | 55,460 |  |  |  | 56,842 |
Corporate |  |  | 1,599 |  |  |  | 28,710 |
|  | $ | 160,554 |  |  | $ | 134,829 |

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