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Business and Geographical Reporting Segments - Results of Operations from Business Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Jun. 30, 2024
Mar. 31, 2024
Jun. 30, 2025
Jun. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Business and Geographical Reporting Segments [Abstract]                      
Revenues, net $ 6,929     $ 8,797         $ 21,404 $ 23,986  
Cost of revenues 2,745     3,511         9,137 10,527  
Gross profit $ 4,184     $ 5,286         $ 12,267 $ 13,459  
Gross profit % 60.40%     60.10%         57.30% 56.10%  
Allocated expenses:                      
Engineering and product development $ 172     $ 243         $ 354 $ 683  
Selling and marketing 3,201     3,027         9,857 9,215  
Unallocated expenses:                      
General and administrative 2,668 $ 2,997 $ 2,263 3,621 $ 2,202 $ 2,708 $ 5,260 $ 4,910 7,928 8,531 $ 10,896
Settlement gains (684)     0         (684) 0  
Total operating expenses 5,357 6,616 5,482 6,891 5,455 6,083 12,098 11,538 17,455 18,429  
Income (loss) from operations (1,173) (2,310) (1,705) (1,605) (478) (2,887) (4,015) (3,365) (5,188) (4,970)  
Interest expense (498)     (537)         (1,475) (1,592)  
Interest income 49     68         344 167  
Net loss (1,622) $ (2,575) $ (2,122) (2,074) $ (91) $ (3,366) $ (4,697) $ (3,457) (6,319) (5,531)  
Other income 0     0         0 864  
Dermatology Recurring Procedures [Member] | Operating Segments [Member]                      
Business and Geographical Reporting Segments [Abstract]                      
Revenues, net 5,546     5,381         15,392 15,416  
Cost of revenues 2,130     1,861         6,003 5,806  
Gross profit $ 3,416     $ 3,520         $ 9,389 $ 9,610  
Gross profit % 61.60%     65.40%         61.00% 62.30%  
Allocated expenses:                      
Engineering and product development $ 138     $ 180         $ 261 $ 521  
Selling and marketing 2,562     2,542         7,087 7,974  
Unallocated expenses:                      
General and administrative 0     0         0 0  
Settlement gains 0               0    
Total operating expenses 2,700     2,722         7,348 8,495  
Income (loss) from operations 716     798         2,041 1,115  
Interest expense 0     0         0 0  
Interest income 0     0         0 0  
Net loss 716     798         2,041 1,115  
Other income       0           0  
Dermatology Procedures Equipment [Member] | Operating Segments [Member]                      
Business and Geographical Reporting Segments [Abstract]                      
Revenues, net 1,383     3,416         6,012 8,570  
Cost of revenues 615     1,650         3,134 4,721  
Gross profit $ 768     $ 1,766         $ 2,878 $ 3,849  
Gross profit % 55.50%     51.70%         47.90% 44.90%  
Allocated expenses:                      
Engineering and product development $ 34     $ 63         $ 93 $ 162  
Selling and marketing 639     485         2,770 1,241  
Unallocated expenses:                      
General and administrative 0     0         0 0  
Settlement gains 0               0    
Total operating expenses 673     548         2,863 1,403  
Income (loss) from operations 95     1,218         15 2,446  
Interest expense 0     0         0 0  
Interest income 0     0         0 0  
Net loss $ 95     1,218         $ 15 2,446  
Other income       $ 0           $ 0