Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities:
Net loss	$ (33,774)	$ (34,317)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation expense	362	271
Noncash interest expense	447	507
Noncash loss on extinguishment of debt		1,228
Amortization of intangible assets	285	709
Net changes in operating lease ROU assets and liabilities	(33)	(26)
Inventory excess and obsolescence charge	992	1,809
Stock-based compensation expense	3,791	2,950
Change in operating assets and liabilities:
Accounts receivable, net	(1,456)	(1,531)
Inventory	(3,503)	(6,540)
Prepaid expenses and other current assets	361	1,322
Accounts payable	1,535	2,291
Accrued expenses and other current and long-term liabilities	1,373	799
Foreign currency remeasurement (gain) loss	(186)	763
Net cash used in operating activities	(29,806)	(29,765)
Cash flows from investing activities:
Purchase of property and equipment	(406)	(826)
Net cash used in investing activities	(406)	(826)
Cash flows from financing activities:
Proceeds from sale of common stock, net of underwriting discounts, commissions and offering costs	46,341	34,675
Proceeds from issuance of long-term debt		40,000
Repayment of long-term debt		(30,000)
Payment of debt financing costs		(3,460)
Proceeds from exercise of stock options	101	13
Payment of withholding taxes related to stock-based compensation to employees	(285)	(157)
Proceeds from issuance of common stock under the employee stock purchase plan	88
Net cash provided by financing activities	46,245	41,071
Effect of exchange rate on cash and cash equivalents	150	(185)
Net increase in cash and cash equivalents	16,183	10,295
Cash and cash equivalents, beginning of period	42,019	43,931
Cash and cash equivalents, end of period	58,202	54,226
Supplemental disclosure of cash flow information:
Cash paid during the period for interest	3,431	2,370
Supplemental disclosures of noncash investing and financing activities:
Property and equipment in accounts payable and accrued expenses and other current liabilities	$ 23	8
Offering costs in accounts payable and accrued expenses and other current liabilities		275
Intangible asset in accrued expenses and other liabilities		1,000
Operating lease ROU asset exchanged for operating lease liabilities		1,376
Tenant improvement and deferred rent reclassified to operating lease liabilities		380
Operating lease liabilities assumed for operating lease ROU assets		$ 1,756