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Note 5 - Goodwill and Intangible Assets - Intangible Assets (Details) - USD ($) $ in Thousands | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Net Carrying Amount | $ 16,959 | $ 18,559
Finite-lived, Gross Carrying Amount | 20,634 | 20,660
Finite-lived, Accumulated Amortization | 12,039 | 10,470
Net Carrying Amount, finite-lived | 8,595 | 10,190
Indefinite-lived, Gross Carrying Amount | 8,364 | 8,369
Net Carrying Amount, indefinite-lived | 8,364 | 8,369
Intangible Assets, Gross Carrying Amount | 28,998 | 29,029
Net Carrying Amount | 16,959 | 18,559
Trademarks [Member] |  |
Indefinite-lived, Gross Carrying Amount | 8,364 | 8,369
Net Carrying Amount, indefinite-lived | 8,364 | 8,369
Customer Relationships [Member] |  |
Finite-lived, Gross Carrying Amount | 16,296 | 16,313
Finite-lived, Accumulated Amortization | 9,251 | 7,990
Net Carrying Amount, finite-lived | 7,045 | 8,323
Patented Technology [Member] |  |
Finite-lived, Gross Carrying Amount | 2,848 | 2,855
Finite-lived, Accumulated Amortization | 1,298 | 988
Net Carrying Amount, finite-lived | 1,550 | 1,867
Patents [Member] |  |
Finite-lived, Gross Carrying Amount | 590 | 590
Finite-lived, Accumulated Amortization | 590 | 590
Net Carrying Amount, finite-lived | 0 | 0
Customer Backlog [Member] |  |
Finite-lived, Gross Carrying Amount | 490 | 492
Finite-lived, Accumulated Amortization | 490 | 492
Net Carrying Amount, finite-lived | 0 | 0
Computer Software, Intangible Asset [Member] |  |
Finite-lived, Gross Carrying Amount | 270 | 270
Finite-lived, Accumulated Amortization | 270 | 270
Net Carrying Amount, finite-lived | 0 | 0
Trade Names [Member] |  |
Finite-lived, Gross Carrying Amount | 140 | 140
Finite-lived, Accumulated Amortization | 140 | 140
Net Carrying Amount, finite-lived | 0 | 0
Electronic Test [Member] |  |
Net Carrying Amount | 3,761 | 4,139
Net Carrying Amount | 3,761 | 4,139
Environmental Technologies [Member] |  |
Net Carrying Amount | 804 | 832
Net Carrying Amount | 804 | 832
Process Technologies [Member] |  |
Net Carrying Amount | 12,394 | 13,588
Net Carrying Amount | $ 12,394 | $ 13,588

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