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Note 4 - Acquisition (Details Textual) - Honeywell International, Inc. [Member] - USD ($)
$ in Millions
3 Months Ended 6 Months Ended 12 Months Ended 13 Months Ended
Mar. 15, 2021
Jan. 24, 2021
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Mar. 31, 2022
Business Combination, Consideration Transferred, Total $ 207.0 $ 212.0            
Business Combination, Consideration Transferred, Liabilities Incurred $ 5.4              
Business Acquisition, Percentage of Voting Interests Acquired 100.00%              
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares) 25,000              
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual     $ 66.7 $ 50.7 $ 131.1 $ 57.2    
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual     0.1 0.1 1.9 0.7    
Business Combination, Acquisition Related Costs     $ 2.1 2.3 $ 3.2 7.5    
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Receivables, Allowance for Doubtful Accounts $ 0.6              
Business Combination, Provisional Information, Initial Accounting Incomplete, Adjustment, Inventory             $ 0.9 $ 3.5
Expense Related to Step Up Value of Acquired Inventory       $ 2.3   $ 2.6