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Note 20 - Subsequent Events (Details Textual) - Subsequent Event [Member] $ in Millions	May 06, 2021 USD ($) shares
AMSC Husky LLC [Member]
Payments to Acquire Real Estate, Total	$ 4.3
Owners of Neeltran Headquarters [Member] | AMSC Husky LLC [Member]
Payments to Acquire Real Estate, Total	2.4
TD Bank [Member] | AMSC Husky LLC [Member]
Payments to Acquire Real Estate, Total	1.9
Neeltran and International [Member]
Payments to Acquire Businesses, Gross	$ 1.0
Neeltran [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) | shares	301,556
Neeltran [Member] | Neeltran Stockholders [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 1.1
Neeltran [Member] | Neeltran Third Party Lenders [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	7.6
Neeltran [Member] | Neeltran Third Party Lenders [Member] | Secured Debt [Member]
Business Combination, Consideration Transferred, Liabilities Incurred	$ 1.9

X

- Definition

Number of shares of equity interests issued or issuable to acquire entity.

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-SubTopic 30
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-Paragraph 1
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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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