CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended				9 Months Ended		12 Months Ended
	Sep. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Cash flows from operating activities
Net loss	$ (10,022)	$ (11,125)	$ (14,158)	$ (17,410)	$ (32,353)	$ (50,081)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation					18,120	17,180
Depreciation and amortization					3,855	2,450
Accounts receivable credit losses					352	50	$ 150
Accretion (amortization) of discount and premium on marketable securities					(2,417)	625
Amortization of debt issuance costs					165	152
Loss on disposal of property and equipment					941	133
Changes in operating assets and liabilities:
Accounts receivable					344	(2,001)
Inventory					(5,039)	(5,178)
Prepaid expenses and other assets					460	1,401
Accounts payable					(876)	1,476
Accrued liabilities and other					32	(1,087)
Net cash used in operating activities					(16,416)	(34,880)
Cash flows from investing activities
Maturities of marketable securities					93,500	90,200
Purchases of marketable securities					(127,680)	(85,257)
Purchases of property and equipment					(6,706)	(7,847)
Net cash used in investing activities					(40,886)	(2,904)
Cash flows from financing activities
Proceeds from public offering, net of discounts, commissions and offering costs					83,671	0
Proceeds from debt financing					36,000	0
Repayments of debt financing					(35,275)	0
Payments of debt issuance costs					(40)	0
Proceeds from issuance of common stock under employee stock purchase plan					1,471	1,199
Proceeds from the exercise of stock options					4,264	305
Net cash provided by financing activities					90,091	1,504
Effect of exchange rate changes on cash and cash equivalents					(14)	(840)
Net increase (decrease) in cash and cash equivalents					32,775	(37,120)
Cash and cash equivalents at
Beginning of period		$ 20,717		$ 63,419	20,717	63,419	63,419
End of period	$ 53,492		$ 26,299		53,492	26,299	$ 20,717
Supplemental disclosure of non-cash information
Unpaid purchases of property and equipment					$ 120	$ 593