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Note 11 - Capital Stock (Details Textual)
1 Months Ended 3 Months Ended 8 Months Ended
Jan. 10, 2025
USD ($)
shares
Jul. 23, 2024
USD ($)
May 09, 2024
USD ($)
$ / shares
shares
May 31, 2024
shares
Mar. 31, 2025
USD ($)
$ / shares
shares
Mar. 31, 2024
USD ($)
Mar. 31, 2025
USD ($)
$ / shares
shares
Dec. 31, 2024
$ / shares
shares
May 31, 2022
shares
Apr. 25, 2022
$ / shares
shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares                   $ 0.001
Offering of Debt Securities and Warrants, Maximum (in shares)                   500,000,000
Class of Warrant or Right, Outstanding (in shares)         784   784 53,562    
Payments for Repurchase of Equity | $         $ 87,170 $ (0)        
Separation Agreement [Member]                    
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.0001              
Securities Repurchase Agreement, Consideration Transferred | $     $ 9,175,605              
Payments for Repurchase of Equity | $     $ 8,800,480              
Stock Issued During Period, Shares, Repurchase of Equity (in shares)     36,705              
Deferred Compensation Arrangement with Individual, Shares Issued (in shares)     200,000              
Severance Costs | $     $ 960,000              
Deferred Compensation Arrangement with Individual, Recorded Liability | $     75,000              
Compensation Expense, Excluding Cost of Good and Service Sold | $     $ 250,000              
Warrants for Common Class B Stock [Member]                    
Class of Warrant or Right, Outstanding (in shares) 52,778       0   0      
Proceeds from Warrant Exercises | $ $ 525,000                  
Warrants for Common Class B Stock [Member] | Separation Agreement [Member]                    
Class of Warrant or Right, Repurchased During the Period (in shares)     51,994              
Warrants for Common Class A Stock [Member]                    
Class of Warrant or Right, Outstanding (in shares)         784   784      
Boulderado [Member] | Separation Agreement [Member]                    
Securities Repurchase Agreement, Consideration Transferred | $     $ 9,951,113              
Payments for Repurchase of Equity | $     $ 7,960,891              
Common Class A [Member]                    
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001   $ 0.001 $ 0.001    
Maximum Shares of Common Stock Registered by Certain Selling Shareholders (in shares)                   8,297,093
Shares of Common Stock Registered by Certain Selling Shareholders (in shares)               8,555,957    
Common Class A [Member] | Separation Agreement [Member]                    
Stock Repurchased During Period, Shares (in shares)     210,000              
Common Class A [Member] | Share Repurchase Program [Member]                    
Treasury Stock, Shares, Acquired (in shares)         0   111,323      
Share Repurchase Program, Authorized, Amount | $   $ 20,000,000                
Share Repurchase Program, Authorized, Percentage of Outstanding Shares   25.00%                
Treasury Stock, Value, Acquired, Cost Method | $             $ 1,600,000      
Common Class A [Member] | Boulderado and Magnolia [Member]                    
Maximum Shares of Common Stock Registered by Certain Selling Shareholders (in shares)                 1,018,660  
Treasury Stock, Shares, Acquired (in shares)       522,231            
Common Class B [Member]                    
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001   $ 0.001 $ 0.001    
Common Stock, Voting Rights Per Share               10    
Common Class B [Member] | Separation Agreement [Member]                    
Stock Repurchased During Period, Shares (in shares)     527,780              
Sky Harbour Group Corporation Class A Common Stock [Member] | Boulderado [Member] | Separation Agreement [Member]                    
Securities Repurchase Agreement, Equity Issued (in shares)     194,738