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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Assets    
Cash and cash equivalents $ 139,833 $ 147,435
Investment securities, available-for-sale 296,518 373,271
Accounts receivable, net 67,953 64,366
Interest and other receivables 936 978
Inventory 6,327 7,881
Prepaid expenses 20,952 23,892
Total current assets 532,519 617,823
Property and equipment, net 7,016 8,047
Operating lease right-of-use assets 57,417 58,268
Restricted cash 5,770 5,770
Long-term inventory 6,205 6,217
Other assets 3,839 3,997
Total assets 612,766 700,122
Liabilities and stockholders’ equity    
Accounts payable 11,854 6,876
Accrued liabilities 105,827 89,192
Total current liabilities 117,681 96,068
Operating lease liabilities 54,693 56,126
Other long-term liabilities 5,544 7,034
Total liabilities 177,918 159,228
Commitments and contingencies (Note 9)
Stockholders’ equity:    
Preferred stock, $0.0001 par value; 5,000,000 shares authorized at June 30, 2022 and December 31, 2021; no shares issued and outstanding at June 30, 2022 and December 31, 2021
Common stock, $0.0001 par value; 225,000,000 shares authorized at June 30, 2022 and December 31, 2021; 161,842,369 shares and 161,012,695 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively 16 16
Additional paid-in capital 2,736,318 2,694,646
Accumulated deficit (2,300,643) (2,153,576)
Accumulated other comprehensive loss (843) (192)
Total stockholders’ equity 434,848 540,894
Total liabilities and stockholders’ equity $ 612,766 $ 700,122