v3.26.3
Note 8 - Stock-based Compensation 1 (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Jul. 01, 2020
Sep. 30, 2026
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2025
Fungible Share Reserve Feature, Shares Subject for Each Share Granted (in shares) 1        
Fungible Share Reserve Feature, Shares Subject to All Other Awards (in shares) 1.8        
Maximum Number of Shares of Class A Common Stock Awarded to any Participant in the Incentive Plan in any Calendar Year (in shares) 1,000,000        
Maximum Cash Awarded to any Participant in the Incentive Plan in any Calendar Year $ 4,000,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)   1,484,216 1,484,216    
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures (in shares)   27,317 82,545    
Payment, Tax Withholding, Share-Based Payment Arrangement     $ 3,080,000 $ 1,099,000  
Common Class A [Member]          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)   27,000 246,872    
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)     159,636    
Share-Based Compensation Arrangement by Share-Based Payment Award, Per Share Weighted Average Price of Shares Purchased (in dollars per share)   $ 22.64 $ 22.64    
Payment, Tax Withholding, Share-Based Payment Arrangement     $ 3,600,000    
Share-Based Payment Arrangement, Option [Member]          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 0 $ 0   $ 0