Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (106,659)	$ (6,969)
Adjustments to reconcile loss to net cash used in operating activities:
Depreciation and amortization	426	443
Amortization of investments	757	1,564
Stock-based compensation	19,601	26,836
Amortization of intangible asset	1,909	1,633
Changes in assets and liabilities:
Accounts receivable, net	40,274	5,213
Inventory	(59,640)	(120,404)
Prepaid and other current assets	(5,706)	9,601
Other long-term assets		(24)
Interest receivable	483	723
Deferred revenue	(1,012)	(1,500)
Accounts payable and other current liabilities	(74,672)	45,582
Other long-term liabilities	2,595	(995)
Net cash used in operating activities	(181,644)	(38,297)
CASH FLOWS FROM INVESTING ACTIVITIES:
Maturities of securities	240,614	312,150
Purchases of securities	(37,507)	(233,067)
Disposal of furniture, fixtures and equipment		4
Net cash provided by investing activities	203,107	79,087
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from the issuance of common stock, net of transaction costs	383	1,028
Proceeds from exercise of stock options, net of transaction costs	59	2,615
Taxes paid related to stock-based awards	(859)	(8,520)
Net cash used in financing activities	(417)	(4,877)
NET INCREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH	21,046	35,913
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF PERIOD	223,372	190,879
CASH AND CASH EQUIVALENTS AND RESTRICTED CASH, END OF PERIOD	244,418	226,792
Cash (paid) received during the year for:
Income taxes	(1,490)	3,670
Supplemental disclosure of non-cash transactions:
Initial recognition of operating lease right-of-use asset	$ 1,148
Laxdale Milestone		$ 12,000