Condensed Consolidated Statements of Cash Flows (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net loss	$ (9,100)	$ (13,212)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	1,115	955
Amortization of right-of-use lease assets	25	44
Amortization of debt issuance costs and premium	0	141
Amortization of discount on short-term investments	(1,505)	(1,257)
Stock-based compensation	4,696	3,295
Provision for excess and obsolete inventory	111	10
Change in operating assets and liabilities:
Accounts receivable	(1,269)	(1,712)
Inventories	(1,390)	(3,241)
Prepaid and other assets	569	(460)
Accounts payable	1,176	1,163
Accrued expenses and other liabilities	(3,737)	(3,490)
Net cash used in operating activities	(9,309)	(17,764)
Investing Activities:
Purchases of property and equipment	(1,967)	(747)
Maturities of short-term investments	74,000	60,000
Purchases of short-term investments	(47,759)	(107,618)
Net cash (used in) provided by investing activities	24,274	(48,365)
Financing Activities:
Proceeds from issuance of common stock from public offering	0	54,050
Proceeds from issuance of common stock in at-the-market offerings	0	11,102
Proceeds from issuance of common stock	10,153	761
Payments for employee taxes related to stock compensation	(2,134)	(337)
Principal payments on finance lease liabilities	(27)	(41)
Payments of deferred offering costs	0	(230)
Net cash provided by financing activities	7,992	65,305
Effect of foreign exchange rate on cash, cash equivalents and restricted cash	(3)	2
Net increase (decrease) in cash, cash equivalents and restricted cash	22,954	(822)
Cash, cash equivalents and restricted cash - beginning of period	10,402	12,595
Cash, cash equivalents and restricted cash - end of period	33,356	11,773
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	548	546
Cash paid for interest on financing leases	5	4
Cash paid for interest on term loan	0	1,344
Right-of-use assets obtained in exchange for lease obligations:
Finance lease	9	0
Lease obligations recorded for right-of-use assets:
Finance lease	9	0
Acquisition of property and equipment included in accounts payable and accrued expenses and other current liabilities	343	259
Deferred offering costs included in accounts payable and accrued liabilities	225	466
Reclassification of deferred financing costs	$ 0	$ (55)