Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Cash flows used in operating activities
Net loss	$ (44,053)	$ (72,119)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation	134	171
Share-based compensation	10,439	8,105
Stock issued for services	22	24
Amortization of premiums and accretion of discounts on investment securities, net	(1,737)	(4,079)
Changes in operating assets and liabilities:
Accounts receivable, net	(6,356)	(12,676)
Inventory	(4,421)	55
Prepaid expenses and other assets	(10,557)	(8,927)
Accounts payable	(1,954)	2,958
Accrued and other current liabilities	1,410	1,185
Accrued customer programs	4,271	4,924
Accrued employee benefits	(6,340)	(4,254)
Operating lease liabilities, net	(924)	1,784
Net cash used in operating activities	(60,066)	(82,849)
Cash flows (used in) provided by investing activities
Purchases of investments	(108,457)	(826,713)
Maturities of investments	91,995	505,244
Purchases of property and equipment	0	(566)
Net cash used in investing activities	(16,462)	(322,035)
Cash flows provided by financing activities
Proceeds of public offering, net	0	433,725
Proceeds from exercise of stock options	3,640	8,089
Net cash provided by financing activities	3,640	441,814
Net (decrease) increase in cash, cash equivalents, and restricted cash	(72,888)	36,930
Cash, cash equivalents, and restricted cash at beginning of period	150,365	93,765
Cash, cash equivalents, and restricted cash at end of period	77,477	130,695
Non-cash investing and financing activities
Right of use assets under operating leases	$ 0	$ 0