v3.26.1
Note 8 - Stockholders' Equity (Details Textual) - USD ($)
 12 Months Ended
Jun. 03, 2026
Jun. 01, 2026
Dec. 12, 2025
Feb. 13, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2026
Jan. 21, 2026
Jun. 15, 2025
Feb. 18, 2025
Jan. 31, 2024
Capital Stock, Shares Authorized (in shares)         105,000,000           55,000,000
Common Stock, Shares Authorized (in shares)         100,000,000            
Common Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01   $ 0.01 $ 544,000      
Preferred Stock, Shares Authorized (in shares)         5,000,000            
Preferred Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01            
Amortization of Debt Issuance Costs         $ 90,124 $ 213,829          
Proceeds from Issuance of Common Stock         $ 112,337,122 0          
Series G Convertible Preferred Stock [Member]                      
Preferred Stock, Par or Stated Value Per Share (in dollars per share)         $ 1,000            
Preferred Stock, Shares Issued (in shares)         6,492            
Conversion of Stock, Shares Converted (in shares)         18,464            
Conversion of Stock, Shares Issued (in shares)         8,692,097            
Preferred Stock, Convertible, Conversion Price (in dollars per share)         $ 2.15            
Stock Issued During Period, Value, Conversion of Convertible Securities         $ 25,300,000            
Preferred Stock, Shares Outstanding (in shares)         6,492            
Class A SPA [Member]                      
Proceeds from Issuance or Sale of Equity       $ 32,200,000              
December Offering [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)     7,750,000                
Shares Issued, Price Per Share (in dollars per share)     $ 7.75                
Over-Allotment Option [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)     1,162,500                
December Offering, Including Over-Allotment [Member]                      
Proceeds from Public Offering, Net     $ 65,200,000                
Securities Purchase Agreement [Member]                      
Shares Issued, Price Per Share (in dollars per share)   $ 14                  
Proceeds from Public Offering, Net $ 47,100,000                    
Stock Issued During Period, Shares, New Issues and Existing Shares Resold (in shares)   7,142,800                  
Proceeds from Issuance of Common Stock   $ 50,000,000                  
Securities Purchase Agreement [Member] | Lightpath [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)   3,571,400                  
Securities Purchase Agreement [Member] | North Run [Member]                      
Stock Issued During Period, Shares, Existing Shares Resold (in shares)   3,571,400                  
Class A Warrants [Member] | Class A SPA [Member]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       170,697              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 2.58              
Class of Warrant or Right, Percent of Shares Purchaseable       37.50%              
Series G Purchasers [Member]                      
Conversion of Stock, Percentage of Outstanding Stock Maximum       19.99%         19.99%    
Conversion of Stock, Exchange Cap (in shares)       6,055,606              
Series G Purchasers [Member] | Series G Purchasers Warrants [Member]                      
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)       4,352,774              
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)       $ 2.58              
Lytton Buyers [Member] | Class A SPA [Member]                      
Proceeds from Issuance or Sale of Equity       $ 1,500,000              
Acquisition Notes [Member]                      
Debt Instrument, Face Amount       5,200,000           $ 1,200,000  
Proceeds from Issuance of Debt       32,200,000              
Payments of Debt Issuance Costs       2,200,000              
Debt Instrument, Covenant, Minimum EBITDA           $ 4,900,000       $ 4,900,000  
Debt Instrument, Convertible, Conversion Price (in dollars per share)           $ 1,000       $ 1,000  
Debt Instrument, Increased Redemption Amount, Percent           102.00%          
Amortization of Debt Issuance Costs       300,000              
Acquisition Notes [Member] | Acquisition Note Warrants [Member]                      
Payments of Debt Issuance Costs       $ 300,000              
Series A Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         250            
Series B Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         300            
Series C Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         500            
Series D Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         500,000 500,000          
Preferred Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01 $ 0.01          
Preferred Stock, Shares Issued (in shares)         0 0          
Preferred Stock, Shares Outstanding (in shares)         0 0          
Series F Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         500            
Series G Convertible Preferred Stock [Member]                      
Preferred Stock, Shares Authorized (in shares)         35,111            
Preferred Stock, Dividend Rate, Percentage       6.50%              
Series G Convertible Preferred Stock [Member] | Series G Purchasers [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)       24,956              
Common Class A [Member]                      
Common Stock, Shares Authorized (in shares)         94,500,000 94,500,000          
Common Stock, Par or Stated Value Per Share (in dollars per share)         $ 0.01 $ 0.01          
Common Class A [Member] | Class A SPA [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)       455,192              
Shares Issued, Price Per Share (in dollars per share)       $ 2.15              
Common Class E-1, E-2, and E-3 [Member]                      
Common Stock, Shares Authorized (in shares)         5,500,000            
Common Class A, 2 [Member] | Class A SPA [Member]                      
Stock Issued During Period, Shares, New Issues (in shares)       232,258              
Shares Issued, Price Per Share (in dollars per share)       $ 2.15              
Acquisition Note Stock [Member] | Acquisition Notes [Member]                      
Payments of Debt Issuance Costs       $ 1,600,000