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Note 6 - Goodwill and Other Intangibles (Tables) | 9 Months Ended
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Dec. 31, 2021
Notes Tables |
Schedule of Goodwill [Table Text Block] |
|  | Goodwill |
March 31, 2021 |  | $ | 34,634 |
Neeltran Acquisition |  |  | 8,837 |
Less impairment loss |  |  | - |
December 31, 2021 |  | $ | 43,471 |
Schedule of Finite-Lived Intangible Assets [Table Text Block] |
|  | December 31, 2021 |  |  | March 31, 2021 |  |  |  |  |
|  | Gross Amount |  |  | Accumulated Amortization |  |  | Net Book Value |  |  | Gross Amount |  |  | Accumulated Amortization |  |  | Net Book Value |  |  | Estimated Useful Life |
Backlog |  | $ | 681 |  |  | $ | (614 | ) |  | $ | 67 |  |  | $ | 600 |  |  | $ | (475 | ) |  | $ | 125 |  |  |  | 2 |
Trade name |  |  | 1,800 |  |  |  | — |  |  |  | 1,800 |  |  |  | 600 |  |  |  | — |  |  |  | 600 |  |  |  | Indefinite |
Customer relationships |  |  | 9,600 |  |  |  | (2,217 | ) |  |  | 7,383 |  |  |  | 6,100 |  |  |  | (739 | ) |  |  | 5,361 |  |  |  | 7 |
Core technology and know-how |  |  | 5,970 |  |  |  | (3,265 | ) |  |  | 2,705 |  |  |  | 5,970 |  |  |  | (2,903 | ) |  |  | 3,067 |  |  |  | 5-10 |
Intangible assets |  | $ | 18,051 |  |  | $ | (6,096 | ) |  | $ | 11,955 |  |  | $ | 13,270 |  |  | $ | (4,117 | ) |  | $ | 9,153 |  |  |  |  |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Years ended March 31, |  | Total |
2022 |  |  | 672 |
2023 |  |  | 2,772 |
2024 |  |  | 2,152 |
2025 |  |  | 1,648 |
2026 |  |  | 1,221 |
Thereafter |  |  | 1,690 |
Total |  | $ | 10,155 |

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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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