CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
CASH FLOWS FROM OPERATING ACTIVITIES
Net loss	$ (42,629)	$ (47,718)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	3,654	5,397
Loss on write-off and disposal of property and equipment and right-of-use asset impairment	85	100
Gain on lease termination	(65)	0
Stock-based compensation	21,724	20,099
Reduction of revenue related to stock warrant issued to customer	1,021	488
Amortization of right-of-use asset	2,509	2,391
Accretion or amortization on short-term investments	(1,488)	(2,933)
Change in fair value of warrant liabilities	229	27
Inventory write down	465	742
Provision (recovery) of doubtful accounts	137	(241)
Realized gain on available for sale securities	(4)	(275)
Changes in operating assets and liabilities:
Accounts receivable	6,471	3,915
Inventory	2,049	3,037
Prepaid expenses and other assets	(3,640)	101
Accounts payable	6,425	958
Accrued and other liabilities	3,978	(9,830)
Contract liabilities	(3,836)	(553)
Operating lease liability	(3,273)	(3,071)
Net cash used in operating activities	(6,188)	(27,366)
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from sale of property and equipment	0	502
Purchases of property and equipment	(1,441)	(1,741)
Purchase of short-term investments	(79,686)	(49,720)
Proceeds from sales of short-term investments	57,250	60,028
Net cash (used in) provided by investing activities	(23,877)	9,069
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from ESPP purchase	980	781
Proceeds from exercise of stock options	48	151
Payments received (remitted) to fund employees tax obligation for vested RSUs	357	0
Proceeds from the issuance of common stock under at-the-market offering, net of commissions and fees	58,798	19,498
At-the-market offering costs for the issuance of common stock	(10)	(95)
Net cash provided by financing activities	60,173	20,335
Effect of exchange rates on cash and cash equivalents	480	(467)
Net increase in cash, cash equivalents and restricted cash	30,588	1,571
Cash, cash equivalents and restricted cash at beginning of period	48,099	52,634
Cash, cash equivalents and restricted cash at end of period	78,687	54,205
SUPPLEMENTAL DISCLOSURES OF OPERATING ACTIVITIES:
Cash paid for interest	0	1,487
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING INFORMATION:
Property and equipment purchases included in accounts payable and accrued liabilities	743	29
Right-of-use assets obtained in exchange for operating lease liability	$ 742	$ 0