Annual report [Section 13 and 15(d), not S-K Item 405]

INCOME TAXES (Details Narrative)

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INCOME TAXES (Details Narrative) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2019
Operating Loss Carryforwards [Line Items]      
Research and development tax credit carryforwards $ 11.2 $ 10.0  
Prepaid taxes 1.5    
Deferred tax assets valuation allowance increase 10.7 10.8  
Capitalized R&D costs 21.5 23.6  
Uncertain tax position $ 0.0 0.0  
Capitalize and amortize research and development, description We will amortize these costs for tax purposes over 5 years for R&D performed in the U.S. and over 15 years for R&D performed outside the U.S.    
Federal [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards $ 233.9 $ 218.6  
Operating loss carryforwards expiration year 2029    
Net operating loss carryforwards no expiration $ 233.9   $ 177.6
Net operating loss carryforwards limitation percentage on taxable income 80.00% 80.00%  
MASSACHUSETTS [Member]      
Operating Loss Carryforwards [Line Items]      
Net operating loss carryforwards $ 220.8 $ 208.0  
Foreign Tax Authority [Member]      
Operating Loss Carryforwards [Line Items]      
Research and development tax credit carryforwards $ 4.0 $ 2.7