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Note 8 - Stock Based Compensation (Details Textual) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Number, Ending Balance (in shares) 1,400,000   1,400,000   1,500,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price, Ending Balance (in dollars per share) $ 15.10   $ 15.10   $ 10.30
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Number (in shares) 388,000   388,000    
Share-Based Payment Arrangement, Expense $ 1.8 $ 1.1 $ 3.7 $ 2.7  
Mr. Bressler [Member] | Natural Habitat, Inc [Member]          
Business Combination, Contingent Consideration Arrangements, Financial Performance Target     $ 25.0    
Business Combination, Contingent Consideration Arrangements, Fair Value of Options Granted in Excess of Range of Outcomes High, Percentage     10.10%    
2021 Long-Term Incentive Compensation Plan [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares) 4,700,000   4,700,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares) 3,700,000   3,700,000    
2021 Long-Term Incentive Compensation Plan [Member] | Restricted Stock Units (RSUs) [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     247,470    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)     $ 15.02    
2021 Long-Term Incentive Compensation Plan [Member] | Performance Shares [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     56,209    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)     $ 15.08    
2021 Long-Term Incentive Compensation Plan [Member] | Performance Shares [Member] | Minimum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Earn out Percentage     0.00%    
2021 Long-Term Incentive Compensation Plan [Member] | Market Stock Units [Member] | Maximum [Member]          
Share-based Compensation Arrangement by Share-based Payment Award, Earn out Percentage     150.00%