Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Cash flows from operating activities:
Net loss	$ (21,187)	$ (18,261)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	347	293
Noncash interest expense	260	302
Amortization of intangible assets	190	190
Net changes in operating lease ROU assets and liabilities	(52)	(47)
Inventory excess and obsolescence charge	910	908
Stockbased compensation expense	2,029	2,192
Gain on sale of product line		(7,580)
Deferred income tax expense	85
Change in operating assets and liabilities:
Accounts receivable, net	(935)	263
Inventory	610	(1,545)
Prepaid expenses and other current assets	14	253
Accounts payable	(448)	594
Accrued expenses and other current and long-term liabilities	464	(2,627)
Foreign currency transaction loss (gain)	83	(16)
Net cash used in operating activities	(17,630)	(25,081)
Cash flows from investing activities:
Purchase of property and equipment	(146)	(603)
Proceeds from the sale of product line	488	5,366
Net cash provided by investing activities	342	4,763
Cash flows from financing activities:
Proceeds from exercise of stock options	1	226
Payment of withholding taxes related to stock-based compensation to employees	(180)	(339)
Proceeds from issuance of common stock under the employee stock purchase plan	60	164
Net cash (used in) provided by financing activities	(119)	51
Effect of exchange rate on cash and cash equivalents	(286)	34
Net decrease in cash and cash equivalents and restricted cash	(17,693)	(20,233)
Cash and cash equivalents and restricted cash, beginning of period	52,935	46,994
Cash and cash equivalents and restricted cash, end of period	35,242	26,761
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	2,667	2,361
Supplemental disclosures of noncash investing and financing activities:
Property and equipment in accounts payable and accrued expenses and other current liabilities	$ 26	$ 55