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Consolidated Statements of Operations and Comprehensive Income - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Income Statement [Abstract]        
Net product revenue $ 1,490,000 $ 2,790,000 $ 3,576,000 $ 4,342,000
Cost of products sold 644,000 1,300,000 1,577,000 2,049,000
Gross profit 846,000 1,490,000 1,999,000 2,293,000
Selling, general and administrative expenses 583,000 531,000 1,173,000 1,088,000
Operating income 263,000 959,000 826,000 1,205,000
Interest income, net 48,000 4,000 67,000 8,000
Other income, net 260,000 (310,000) 481,000 (393,000)
Income before income taxes 571,000 653,000 1,374,000 820,000
Income tax provision (40,000) (40,000) (81,000) 1,835,000
Net income 531,000 613,000 1,293,000 2,655,000
Other comprehensive income:        
Foreign currency translation adjustment (1,000) 12,000 (2,000) (5,000)
Comprehensive income $ 530,000 $ 625,000 $ 1,291,000 $ 2,650,000
Net income per share: Basic (in Dollars per share) $ 0.09 $ 0.1 $ 0.22 $ 0.45
Diluted (in Dollars per share) $ 0.09 $ 0.1 $ 0.21 $ 0.45
Weighted average shares outstanding: Basic (in Shares) 5,996,180 5,936,180 5,996,180 5,906,180
Diluted (in Shares) 6,033,180 5,994,180 6,033,180 5,950,180
Cash dividends declared per common share (in Dollars per share) $ 0.05 $ 0.145 $ 0.1 $ 0.19