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Note 11 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Mar. 31, 2019 | Jun. 30, 2018 | Mar. 31, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Net revenues | $ 14,352 |  | $ 21,097 |  | $ 32,414 | $ 39,968
Earnings (loss) before income tax expense (benefit) | (300) |  | 4,396 |  | 1,162 | 5,378
Net earnings | (187) | $ 1,138 | 4,014 | $ 381 | 951 | 4,395
Corporate, Non-Segment [Member] |  |  |  |  |  |
Earnings (loss) before income tax expense (benefit) | (711) |  | (390) |  | (1,440) | (608)
Net earnings | (610) |  | (346) |  | (1,178) | (515)
Thermal Testing Products [Member] | Operating Segments [Member] |  |  |  |  |  |
Net revenues | 10,519 |  | 13,999 |  | 23,153 | 27,233
Earnings (loss) before income tax expense (benefit) | 309 |  | 2,592 |  | 1,453 | 2,500
Net earnings | 298 |  | 2,415 |  | 1,189 | 1,960
EMS [Member] | Operating Segments [Member] |  |  |  |  |  |
Net revenues | 3,833 |  | 7,098 |  | 9,261 | 12,735
Earnings (loss) before income tax expense (benefit) | 102 |  | 2,194 |  | 1,149 | 3,486
Net earnings | $ 125 |  | $ 1,945 |  | $ 940 | $ 2,950

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- Definition Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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