Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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 revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Amount of assets, excluding financial assets and goodwill, that lack physical substance, having a projected indefinite period of benefit, acquired at the acquisition date.

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The amount of identifiable intangible assets recognized as of the acquisition date.

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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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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands			1 Months Ended	12 Months Ended
	Dec. 03, 2019	Oct. 01, 2018	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Business Combination, Acquisition Related Costs				$ 200	$ 100
CUI Power [Member]
Revenue from Contract with Customer, Including Assessed Tax			$ 32,000
Majority Products Business of CUI Power [Member]
Payments to Acquire Businesses, Gross	$ 32,000		$ 29,196
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				2,200
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				400
Majority Products Business of CUI Power [Member] \| Trade Names [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	5,000
Majority Products Business of CUI Power [Member] \| Customer Relationships [Member]
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles	$ 11,000
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	13 years
BCMZ Precision Engineering Limited [Member]
Payments to Acquire Businesses, Gross		$ 2,600
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				1,000	500
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				$ 100	$ 100