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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended		12 Months Ended
	Mar. 31, 2021	Jan. 08, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2020
Payments to Acquire Businesses, Net of Cash Acquired, Total					$ (0)	$ 16,811
EOS Power Panama Inc. [Member]
Revenues, Total							$ 12,000
Business Combination, Acquisition Related Costs			$ 0	$ 300	$ 0	500
RMS and EOS Acquisitions [Member]
Revenues, Total				6,000		8,100
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				$ 1,000		$ 1,400
rms Connectors, Inc. [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ 9,000
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Consideration Transferred	$ (7,800)

X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of any measurement period adjustment (as defined) realized during the reporting period to items of consideration transferred in connection with a business combination for which the initial accounting was incomplete.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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