Note 2 - Acquisitions (Details Textual) - USD ($) $ in Millions		3 Months Ended
Mar. 01, 2021	Mar. 31, 2021
Payments to Acquire Businesses, Gross		$ 17
Pi Innovo Holdings Limited [Member]
Business Acquisition, Percentage of Voting Interests Acquired	51.00%
Business Combination, Step Acquisition, Equity Interest in Acquiree, including Subsequent Acquisition, Percentage, Total	100.00%
Business Combination, Consideration Transferred, Total	$ 35
Payments to Acquire Businesses, Gross	18
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value	$ 17

Percentage of voting equity interests acquired at the acquisition date in the business combination.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Fair value at acquisition-date of the equity interest in the acquiree held by the acquirer, immediately before the acquisition date for businesses combined in stages.

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Percentage of voting equity interests acquired in a business combination achieved in stages, including equity interests in the acquiree held by the acquirer immediately before the acquisition date and acquired at 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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