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Note 11 - Retirement Plans (Details Textual)
 3 Months Ended 12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Retirement Plan Expense   $ 1,800,000 $ 1,600,000 $ 1,200,000
Defined Contribution Plan [Member]        
Company Matching Percentage on First Eight Percent of Employee Contributions   50.00% 50.00% 50.00%
Employee Contribution Percentage for Which Company Will Match at Fifty Percent   8.00% 8.00% 6.00%
ParkUSA Defined Contribution Plan [Member]        
Company Matching Percentage on First Eight Percent of Employee Contributions 100.00%      
Employee Contribution Percentage for Which Company Will Match at One Hundred Percent 4.00%      
Pension Plan [Member]        
Number of Non-contributory Defined Benefit Plans   2    
Liability, Defined Benefit Plan, Total $ 1,000,000.0 $ 1,000,000.0 $ 1,600,000  
Accumulated Other Comprehensive Income (Loss), Unrecognized Net Actuarial Losses, Net of Tax 1,500,000 1,500,000 1,800,000  
Defined Benefit Plan, Accumulated Benefit Obligation 6,100,000 6,100,000 6,500,000  
Defined Benefit Plan, Plan Assets, Amount, Ending Balance $ 5,100,000 5,100,000 4,900,000  
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Total   $ 0 $ 0 $ 0
Defined Benefit Plan, Assumptions Used Calculating Benefit Obligation, Discount Rate 2.41% 2.41% 2.04%  
Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets   7.00% 7.00%  
Non-qualified Retirement Savings Plan [Member]        
Company Matching Percentage on First Ten Thousand Dollar Employee Contributions   50.00%    
Officer Contribution for Which Company Will Match at Fifty Percent   $ 10,000    
Select Employee Contribution for Which Company Will Match at Fifty Percent   5,000    
Non-qualified Retirement Savings Plan [Member] | Other Long-term Liabilities [Member]        
Deferred Compensation Liability, Classified, Noncurrent, Total $ 4,300,000 $ 4,300,000 $ 4,700,000