Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (8,431)	$ (34,020)
Adjustments to reconcile loss to net cash used in operating activities:
Depreciation and amortization	65	94
Accretion of investments	(2,745)	(1,853)
Stock-based compensation	9,605	7,391
Amortization of intangible asset	1,458	1,403
Changes in assets and liabilities:
Accounts receivable, net	9,872	8,260
Inventory	25,529	43,013
Prepaid and other current assets	(19,934)	(23,814)
Other long-term assets	73	(522)
Interest receivable	(1)	104
Deferred revenue	(4,850)	(9,990)
Accounts payable and other current liabilities	(26,394)	11,627
Other long-term liabilities	403	(1,497)
Net cash (used in) provided by operating activities	(15,350)	196
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of furniture, fixtures and equipment	0	(23)
Maturities of securities	133,000	96,993
Purchases of securities	(99,586)	(82,260)
Net cash provided by investing activities	33,414	14,710
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the sale of common stock	122	240
Proceeds from exercise of stock options, net of transaction costs	10	1,878
Taxes paid related to stock-based awards	(1,524)	(1,694)
Net cash (used in) provided by financing activities	(1,392)	424
NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	16,672	15,330
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	199,777	218,189
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	216,449	233,519
Cash paid during the year for:
Income taxes	(669)	(671)
Supplemental disclosure of non-cash transactions:
Initial recognition of operating lease right-of-use asset	189	580
Initial recognition of furniture, fixtures and equipment lease	$ 0	$ 624