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Note 12 - Segment Information (Tables) | 3 Months Ended
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Mar. 31, 2020
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 20 20 |  |  | 201 9 |
Net Revenues: |
Thermal |  | $ | 9,334 |  |  | $ | 12,634 |
EMS |  |  | 1,896 |  |  |  | 5,428 |
|  | $ | 11,230 |  |  | $ | 18,062 |
Earnings (loss) before income tax expense (benefit): |
Thermal |  | $ | (426 | ) |  | $ | 1,144 |
EMS |  |  | (1,004 | ) |  |  | 1,047 |
Corporate |  |  | 37 |  |  |  | (729 | )
|  | $ | (1,393 | ) |  | $ | 1,462 |
Net earnings (loss): |
Thermal |  | $ | (350 | ) |  | $ | 891 |
EMS |  |  | (824 | ) |  |  | 815 |
Corporate |  |  | 31 |  |  |  | (568 | )
|  | $ | (1,143 | ) |  | $ | 1,138 |
Revenue from External Customers by Geographic Areas [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 20 20 |  |  | 201 9 |
Net revenues: |  |  |  |  |  |  |  |
U.S. |  | $ | 5,719 |  |  | $ | 6,810 |
Foreign |  |  | 5,511 |  |  |  | 11,252 |
|  | $ | 11,230 |  |  | $ | 18,062 |
Long-lived Assets by Geographic Areas [Table Text Block] |
|  | March 31, 20 20 |  |  | December 31, 201 9 |
Property and equipment: |  |  |  |  |  |  |  |
U.S. |  | $ | 2,062 |  |  | $ | 2,163 |
Foreign |  |  | 279 |  |  |  | 257 |
|  | $ | 2,341 |  |  | $ | 2,420 |
Asset [Member] |
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | March 31, 20 20 |  |  | December 31, 201 9 |
Identifiable assets: |  |  |  |  |  |  |  |
Thermal |  | $ | 51,223 |  |  | $ | 51,621 |
EMS |  |  | 7,076 |  |  |  | 7,319 |
Corporate |  |  | 760 |  |  |  | 775 |
|  | $ | 59,059 |  |  | $ | 59,715 |

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