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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2022
Dec. 31, 2021
Assets    
Cash and cash equivalents $ 154,842 $ 147,435
Investment securities, available-for-sale 281,737 373,271
Accounts receivable, net 55,733 64,366
Interest and other receivables 403 978
Inventory 5,844 7,881
Prepaid expenses 22,993 23,892
Total current assets 521,552 617,823
Property and equipment, net 6,510 8,047
Operating lease right-of-use assets 56,624 58,268
Restricted cash 5,770 5,770
Long-term inventory 5,992 6,217
Other assets 6,043 3,997
Total assets 602,491 700,122
Liabilities and stockholders’ equity    
Accounts payable 10,008 6,876
Accrued liabilities 106,562 89,192
Total current liabilities 116,570 96,068
Operating lease liabilities 53,769 56,126
Other long-term liabilities 6,466 7,034
Total liabilities 176,805 159,228
Commitments and contingencies (Note 9)
Stockholders’ equity:    
Preferred stock, $0.0001 par value; 5,000,000 shares authorized at September 30, 2022 and December 31, 2021; no shares issued and outstanding at September 30, 2022 and December 31, 2021 0 0
Common stock, $0.0001 par value; 225,000,000 shares authorized at September 30, 2022 and December 31, 2021; 161,871,806 shares and 161,012,695 shares issued and outstanding at September 30, 2022 and December 31, 2021, respectively 16 16
Additional paid-in capital 2,754,861 2,694,646
Accumulated deficit (2,327,826) (2,153,576)
Accumulated other comprehensive loss (1,365) (192)
Total stockholders’ equity 425,686 540,894
Total liabilities and stockholders’ equity $ 602,491 $ 700,122