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Note 14 - Share-based Compensation (Details Textual) - USD ($)
3 Months Ended 6 Months Ended
Feb. 24, 2022
Feb. 08, 2021
Mar. 25, 2020
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-Based Payment Arrangement, Expense         $ 5,973,000   $ 2,520,000 $ 11,372,000 $ 4,024,000
Share-Based Payment Arrangement, Option [Member]                  
Share-Based Payment Arrangement, Expense           $ 6,000   0 15,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value       $ 5,500,000       5,500,000  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value       390,000   475,000   $ 3,900,000 3,800,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)               0  
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term (Year)               3 years 3 months 18 days  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       0       $ 0  
Performance Shares [Member] | Management Performance Bonus Plan 2017 [Member]                  
Share-Based Payment Arrangement, Expense       0          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period, Intrinsic Value       $ 0   6,900,000     9,800,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)       0          
Restricted Stock [Member]                  
Share-Based Payment Arrangement, Expense       $ 4,700,000   2,100,000   9,400,000 3,500,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       35,800,000       35,800,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value       883,000   2,400,000   8,800,000 4,600,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value       2,000,000.0   2,500,000   $ 7,000,000.0 5,200,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               2 years 8 months 12 days  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)               372,069  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)               282,317  
Market-based Restricted Stock [Member]                  
Share-Based Payment Arrangement, Expense       1,200,000   441,000   $ 1,800,000 726,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)               349,568  
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Total       5,700,000       $ 5,700,000  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value $ 6,700,000 $ 1,300,000              
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)               1 year 4 months 24 days  
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares) 218,280             218,280  
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Historical Volatility Rate 63.00% 68.00% 78.00%            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00% 0.00% 0.00%            
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate 1.50% 0.10% 0.30%            
Share Based Compensation Arrangement By Share Based Payment Award, Fair Value Assumptions, Expected Volatility Rate Period (Year) 2 years 2 years 2 years            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Aggregate Fair Value       0   261,000   $ 6,700,000 1,800,000
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Vested       $ 0   $ 0   $ 5,000,000.0 $ 10,200,000
Market-based Restricted Stock [Member] | Maximum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Awards 200.00% 200.00% 200.00%            
Market-based Restricted Stock [Member] | Minimum [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Percentage of Awards 0.00% 0.00%              
Market-based Restricted Stock [Member] | Executive Officer [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares) 240,428 30,616 109,140            
Market-based Restricted Stock Second Issuance [Member]                  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Fair Value     $ 1,200,000