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Note 9 - Incentive Plans (Details Textual) - USD ($)
1 Months Ended 4 Months Ended 8 Months Ended 12 Months Ended
Nov. 04, 2021
Jun. 30, 2022
Jun. 30, 2021
Nov. 30, 2020
Dec. 31, 2020
Aug. 21, 2020
Dec. 31, 2022
Dec. 31, 2021
Share-Based Payment Arrangement, Expense         $ 15,776,000 $ 0 $ 33,352,000 $ 6,676,000
Outside Directors [Member]                
Share-Based Payment Arrangement, Expense       $ 302,000        
Stock Issued During Period, Shares, Issued for Services       62,500        
Each Outside Director [Member]                
Stock Issued During Period, Shares, Issued for Services       12,500        
Share-Based Payment Arrangement, Option [Member]                
Share-Based Payment Arrangement, Expense         15,500,000   18,100,000 4,600,000
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount             $ 1,100,000 1,800,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)             2 years  
Restricted Stock [Member]                
Share-Based Payment Arrangement, Expense             $ 7,200,000 1,200,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 1,500,500              
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year) 3 years              
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total             13,200,000  
Restricted Stock [Member] | Outside Directors [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)   21,184 67,779          
Restricted Stock [Member] | Outside Directors [Member] | June 1, 2022 [Member]                
Share-Based Payment Arrangement, Expense             427,000  
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount             305,000  
Restricted Stock [Member] | Outside Directors [Member] | June 1, 2021 [Member]                
Share-Based Payment Arrangement, Expense             284,000  
Contractual Equity-based Bonus [Member]                
Share-Based Payment Arrangement, Expense             7,300,000 488,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares) 600,000              
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total             $ 12,900,000  
The 401K Plan [Member]                
Defined Contribution Plan, Period of Employment for Eligibility (Month)             3 months  
Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent             80.00%  
Defined Contribution Plan, Employer Matching Contribution, Percent of Match             100.00%  
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay             4.00%  
Defined Contribution Plan, Employer Discretionary Contribution Amount         $ 49,000   $ 358,000 $ 227,000