Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Cash flows from operating activities:
Net loss	$ (29,790)	$ (28,633)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	500	461
Noncash interest expense	370	455
Amortization of intangible assets	285	285
Net changes in operating lease ROU assets and liabilities	323	(73)
Inventory excess and obsolescence charge	1,542	1,563
Stockbased compensation expense	2,984	3,273
Gain on sale of product line		(7,580)
Deferred income tax expense	85
Change in operating assets and liabilities:
Accounts receivable, net	(1,042)	(1,745)
Inventory	(228)	(2,356)
Prepaid expenses and other current assets	286	524
Accounts payable	204	636
Accrued expenses and other current and long-term liabilities	1,097	(967)
Foreign currency transaction loss	35	93
Net cash used in operating activities	(23,349)	(34,064)
Cash flows from investing activities:
Purchase of property and equipment	(357)	(725)
Proceeds from the sale of product line	1,011	5,366
Net cash provided by investing activities	654	4,641
Cash flows from financing activities:
Proceeds from exercise of stock options	1	226
Payment of withholding taxes related to stock-based compensation to employees	(201)	(358)
Proceeds from issuance of common stock under the employee stock purchase plan	105	281
Net cash (used in) provided by financing activities	(95)	149
Effect of exchange rate on cash and cash equivalents	(182)	(154)
Net decrease in cash and cash equivalents and restricted cash	(22,972)	(29,428)
Cash and cash equivalents and restricted cash, beginning of period	52,935	46,994
Cash and cash equivalents and restricted cash, end of period	29,963	17,566
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	3,978	3,552
Supplemental disclosures of noncash investing and financing activities:
Property and equipment in accounts payable and accrued expenses and other current liabilities	$ 15	$ 175