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Note 2 - Acquisitions (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Mar. 01, 2021
Dec. 31, 2022
Dec. 31, 2021
Oct. 20, 2020
Payments to Acquire Businesses, Gross   $ 1 $ 18  
Pi Innovo Holdings Limited [Member]        
Business Acquisition, Percentage of Voting Interests Acquired 51.00%     49.00%
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