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Note 12 - Subsequent Events (Details Textual)
$ / shares in Units, R$ in Millions
Apr. 18, 2024
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2024
BRL (R$)
May 03, 2024
$ / shares
shares
Apr. 08, 2024
USD ($)
Mar. 26, 2024
Feb. 07, 2024
Subsequent Event [Member]              
Treasury Stock, Common, Shares (in shares) | shares       1,000,000      
Common Stock Closing Price (in dollars per share) | $ / shares       $ 1.8      
Subsequent Event [Member] | Resource Plus, Inc [Member]              
Payments to Acquire Interest in Joint Venture $ 3,000,000            
Subsequent Event [Member] | Resource Plus Acquisition Note [Member]              
Payments to Acquire Interest in Joint Venture 250,000            
Debt Instrument, Face Amount $ 2,750,000            
Subsequent Event [Member] | SPAR Marketing Force [Member]              
Disposal Group, Including Discontinued Operation, Consideration         $ 200,000    
Subsequent Event [Member] | Brazil Joint Venture [Member]              
Disposal Group, Including Discontinued Operation, Consideration   $ 11,800,000 R$ 58.9        
SGRP Meridian [Member]              
Subsidiary, Ownership Percentage, Parent             51.00%
SPAR Marketing Force [Member]              
Subsidiary, Ownership Percentage, Parent           51.00%