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Note 2 - NEPSI Acquisitions - Estimated Fair Values of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Oct. 01, 2020	Mar. 31, 2020
Goodwill	$ 34,659		$ 1,719
Northeast Power Systems, Inc (NEPSI) [Member]
Net working capital (excluding inventory and deferred revenue)		$ 100
Inventory	$ 1,000	4,200
Property, plant and equipment		2,300
Deferred revenue		(2,700)
Deferred tax liability		1,700
Net tangible assets/(liabilities)		2,200
Net identifiable intangible assets/(liabilities)		7,300
Trade names and trademarks		7,300
Goodwill		32,900
Total purchase consideration		42,400
Northeast Power Systems, Inc (NEPSI) [Member] | Backlog [Member]
Net identifiable intangible assets/(liabilities)		600
Trade names and trademarks		600
Northeast Power Systems, Inc (NEPSI) [Member] | Trade Names [Member]
Net identifiable intangible assets/(liabilities)		600
Trade names and trademarks		600
Northeast Power Systems, Inc (NEPSI) [Member] | Customer Relationships [Member]
Net identifiable intangible assets/(liabilities)		6,100
Trade names and trademarks		$ 6,100

X

- Definition

Amount of deferred revenue recognized as of the acquisition date.

+ References

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Amount recognized as of the acquisition date for the net tangible assets (liabilities).

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Amount of net working capital recognized as of the acquisition date.

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Amount of deferred tax liability attributable to taxable temporary differences assumed at the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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