CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Cash flows from operating activities
Net loss	$ (11,206)	$ (11,125)	$ (18,513)	$ (17,410)	$ (22,331)	$ (35,923)
Adjustments to reconcile net loss to net cash used in operating activities:
Stock-based compensation					12,192	11,258
Depreciation and amortization					2,322	1,505
Accounts receivable credit losses					103	0	$ 150
Accretion (amortization) of discount and premium on marketable securities					(1,249)	515
Amortization of debt issuance costs					123	101
Loss on disposal of property and equipment					340	105
Changes in operating assets and liabilities:
Accounts receivable					88	(720)
Inventory					(3,293)	(4,882)
Prepaid expenses and other assets					262	851
Accounts payable					(7)	936
Accrued liabilities and other					(2,893)	(2,099)
Net cash used in operating activities					(14,343)	(28,353)
Cash flows from investing activities
Maturities of marketable securities					69,000	48,000
Purchases of marketable securities					(49,723)	(55,356)
Purchases of property and equipment					(5,293)	(4,275)
Net cash provided by (used in) investing activities					13,984	(11,631)
Cash flows from financing activities
Proceeds from public offering, net of discounts and commissions					84,137	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					4,035	199
Net cash provided by financing activities					90,328	1,398
Effect of exchange rate changes on cash and cash equivalents					129	(514)
Net increase (decrease) in cash and cash equivalents					90,098	(39,100)
Cash and cash equivalents at
Beginning of period		$ 20,717		$ 63,419	20,717	63,419	63,419
End of period	$ 110,815		$ 24,319		110,815	24,319	$ 20,717
Supplemental disclosure of non-cash information
Unpaid purchases of property and equipment					510	1,593
Unpaid public offering costs					$ 465	$ 0