Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (28,633)	$ (33,774)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	461	362
Noncash interest expense	455	447
Amortization of intangible assets	285	285
Net changes in operating lease ROU assets and liabilities	(73)	(33)
Inventory excess and obsolescence charge	1,563	992
Stock-based compensation expense	3,273	3,791
Gain on sale of product line	(7,580)
Change in operating assets and liabilities:
Accounts receivable, net	(1,745)	(1,456)
Inventory	(2,356)	(3,503)
Prepaid expenses and other current assets	524	361
Accounts payable	636	1,535
Accrued expenses and other current and long-term liabilities	(967)	1,373
Foreign currency transaction gain (loss)	93	(186)
Net cash used in operating activities	(34,064)	(29,806)
Cash flows from investing activities:
Purchase of property and equipment	(725)	(406)
Proceeds from the sale of product line	5,366
Net cash provided by (used in) investing activities	4,641	(406)
Cash flows from financing activities:
Proceeds from sale of common stock, net		46,341
Proceeds from exercise of stock options	226	101
Payment of withholding taxes related to stock-based compensation to employees	(358)	(285)
Proceeds from issuance of common stock under the employee stock purchase plan	281	88
Net cash provided by financing activities	149	46,245
Effect of exchange rate on cash and cash equivalents	(154)	150
Net (decrease) increase in cash and cash equivalents and restricted cash	(29,428)	16,183
Cash and cash equivalents and restricted cash, beginning of period	46,994	42,019
Cash and cash equivalents and restricted cash, end of period	17,566	58,202
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	3,552	3,431
Supplemental disclosures of noncash investing and financing activities:
Property and equipment in accounts payable and accrued expenses and other current liabilities	$ 175	$ 23