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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Allowance on accounts receivable $ 1,113 $ 541
Property, plant and equipment, accumulated depreciation 28,920 26,049
Rental assets - accumulated depreciation 7,003 5,484
Intangible assets - accumulated amortization $ 39,987 $ 31,629
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 2,000,000 2,000,000
Common stock, par value (in dollars per share) [1] $ 0.001 $ 0.001
Common stock, shares authorized (in shares) [1] 150,000,000 150,000,000
Common stock, shares issued (in shares) [1] 11,878,557 10,846,815
Common stock, shares outstanding (in shares) [1] 11,878,557 10,846,815
Series E Preferred Stock    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 39,500 39,500
Preferred stock, shares issued (in shares) 25,000 25,000
Preferred stock, shares outstanding (in shares) 25,000 25,000
Beneficial conversion feature $ 35,123  
[1] Adjusted retroactively for reverse stock split that occurred on January 24, 2024, see Note 1