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Consolidated Statements of Operations and Comprehensive Income - USD ($)
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Income Statement [Abstract]    
Net product revenue $ 963,000 $ 2,086,000
Cost of products sold 467,000 933,000
Gross profit 496,000 1,153,000
Selling, general and administrative expenses 570,000 590,000
Operating income (74,000) 563,000
Interest income, net 78,000 19,000
Other income, net 556,000 221,000
Income before income taxes 560,000 803,000
Income tax provision (8,000) (41,000)
Net income 552,000 762,000
Other comprehensive income:    
Foreign currency translation adjustment 8,000 (1,000)
Comprehensive income $ 560,000 $ 761,000
Net income per share: Basic (in Dollars per share) $ 0.09 $ 0.13
Diluted (in Dollars per share) $ 0.09 $ 0.13
Weighted average shares outstanding: Basic (in Shares) 6,021,180 5,996,180
Diluted (in Shares) 6,031,180 6,034,180
Cash dividends declared per common share (in Dollars per share) $ 0.05 $ 0.05