Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 18,946	$ 7,143
Accounts receivable, net of provision for credit losses of $1,101 and $541, respectively	17,435	25,259
Inventories	21,916	37,976
Prepaid expenses and other	5,562	7,978
Total current assets	63,859	78,356
Property, plant and equipment, net of accumulated depreciation of $28,240 and $26,049, respectively	3,597	5,390
Rental assets, net of accumulated depreciation of $5,037 and $5,484, respectively	5,037	4,816
Intangible assets, net of accumulated amortization of $42,138 and $31,629, respectively	35,057	41,383
Goodwill	21,922	21,922
Right-of-use assets	5,819	6,662
Other assets	1,464	488
Total assets	136,755	159,017
Current liabilities:
Accounts payable	30,980	29,018
Accrued expenses and other current liabilities	28,917	27,945
Total current liabilities	59,897	56,963
Liabilities, Noncurrent [Abstract]
2025 Notes, net	159,541	158,427
Revolving credit facility, net	0	6,919
Deferred tax liabilities, net	278	323
Other long-term liabilities	7,822	6,503
Total liabilities	227,538	229,135
Commitments and contingencies
Stockholders’ deficit:
Preferred Stock, Value, Issued	0	0
Common stock, par value $0.001; 150,000,000 shares authorized, 117,024,709 and 108,468,150 shares issued and outstanding, respectively	117	108
Additional paid-in capital	808,203	793,855
Accumulated other comprehensive loss	(7,288)	(6,329)
Accumulated deficit	(891,815)	(857,752)
Total stockholders’ deficit	(90,783)	(70,118)
Total liabilities and stockholders’ deficit	$ 136,755	$ 159,017