Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Allowance for doubtful accounts	$ 1,101	$ 541
Accumulated depreciation, Property, plant and equipment	28,240	26,049
Accumulated depreciation, Rental assets	5,037	5,484
Accumulated amortization, Intangible assets	$ 42,138	$ 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)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	150,000,000	150,000,000
Common stock, shares issued (in shares)	117,024,709	108,468,150
Common stock, shares outstanding (in shares)	117,024,709	108,468,150
Revolving credit facility, net	$ 0	$ 6,919
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 issued (in shares)	25,000	25,000
Preferred stock, shares outstanding (in shares)	25,000	25,000
Preferred stock, liquidation preference per share (in dollars per share)	$ 1,000	$ 1,000