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v3.23.1

Note 3 - Acquisitions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 06, 2021 | Oct. 01, 2020 | Mar. 31, 2023 | Mar. 31, 2022
Payments to Acquire Businesses, Gross |  |  | $ (0) | $ 11,479
Common Stock, Par or Stated Value Per Share (in dollars per share) |  |  | $ 0.01 | $ 0.01
Cost of Revenue, Total |  |  | $ 97,463 | $ 94,943
Backlog [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  | 2 years
Customer Relationships [Member] |  |  |  |
Finite-Lived Intangible Asset, Useful Life (Year) |  |  |  | 7 years
AMSC Husky LLC [Member] |  |  |  |
Payments to Acquire Real Estate | $ 4,300 |  |  |
Neeltran Inc. [Member] |  |  |  |
Payments to Acquire Businesses, Gross | 4,400 |  |  |
Business Combination, Consideration Transferred, Total | 16,400 |  |  |
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory |  |  |  | $ 600
Cost of Revenue, Total |  |  |  | 600
Neeltran Inc. [Member] | Trademarks and Trade Names [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets | $ 1,200 |  |  | 1,200
Neeltran Inc. [Member] | Trademarks and Trade Names [Member] | Royalty Rate [Member] |  |  |  |
Intangible Assets, Measurement Input (Rate) | 1.00% |  |  |
Neeltran Inc. [Member] | Trademarks and Trade Names [Member] | Measurement Input, Discount Rate [Member] |  |  |  |
Intangible Assets, Measurement Input (Rate) | 24.50% |  |  |
Neeltran Inc. [Member] | Trademarks and Trade Names [Member] | Measurement Input, Expected Term [Member] |  |  |  |
Intangible Assets, Measurement Input (Rate) | 0.15% |  |  |
Neeltran Inc. [Member] | Backlog [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 100 |  |  | 100
Finite-Lived Intangible Asset, Useful Life (Year) | 2 years |  |  |
Neeltran Inc. [Member] | Customer Relationships [Member] |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles | $ 3,500 |  |  | $ 3,500
Finite-Lived Intangible Asset, Useful Life (Year) | 7 years |  |  |
Northeast Power Systems, Inc (NEPSI) [Member] |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 26,000 |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) |  | 873,657 |  |
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High, Number of Shares (in shares) |  | 1,000,000 |  |
Neeltran Inc. Sellling Stockholders [Member] | Neeltran Inc. [Member] |  |  |  |
Payments to Acquire Businesses, Gross | $ 1,000 |  |  |
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | 301,556 |  |  |
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ 1 |  |  |
Capanna, Sr. and Capanna, Jr. [Member] | Neeltran Inc. [Member] |  |  |  |
Payments to Acquire Businesses, Gross | $ 1,100 |  |  |
Owners of Neeltran Headquarters [Member] | AMSC Husky LLC [Member] |  |  |  |
Payments to Acquire Real Estate | 2,400 |  |  |
Neeltran Third Party Lenders [Member] | Neeltran Inc. [Member] |  |  |  |
Payments to Acquire Businesses, Gross | 7,600 |  |  |
Neeltran Third Party Lenders [Member] | Neeltran Inc. [Member] | Indebtedness Secured by Mortgage on Real Property [Member] |  |  |  |
Payments to Acquire Businesses, Gross | $ 1,900 |  |  |

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