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Note 2 - Acquisitions (Details Textual) - USD ($)
$ in Millions
12 Months Ended
Mar. 01, 2021
Feb. 05, 2020
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Oct. 20, 2020
Feb. 28, 2019
Payments to Acquire Businesses, Gross     $ 1 $ 18 $ 6    
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            
Ashwoods Innovations Ltd. [Member]              
Business Acquisition, Percentage of Voting Interests Acquired             62.40%
Curtis Investment's Interest in Ashwoods Innovations Limited [Member]              
Business Acquisition, Percentage of Voting Interests Acquired   35.40%          
Business Combination, Consideration Transferred, Total   $ 22          
Payments to Acquire Businesses, Gross   $ 8          
Ownership percentage   97.80%          
Equity Method Investments, Effective Settlement of Pre-existing Loan Payable   $ 4          
Curtis Investment's Interest in Ashwoods Innovations Limited [Member] | Investment in Ashwoods [Member]              
Business Combination, Step Acquisition, Equity Interest in Acquiree, Fair Value   10          
Curtis Investment's Interest in Ashwoods Innovations Limited [Member] | Other Operating Income (Expense) [Member]              
Equity Method Investment, Gain (loss) to Other Income (Expense), Net   $ 3