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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2023
Dec. 31, 2022
Current assets:    
Cash and cash equivalents $ 56,903 $ 56,845
Restricted cash 535 364
Marketable securities 314,475 115,901
Interest and other receivables 1,187 3,144
Prepaid and other current assets 4,179 3,992
Total current assets 377,279 180,246
Noncurrent marketable securities 28,281  
Property and equipment, net 1,147 793
Operating leases, right-of-use assets 3,841 4,147
Deposits and other assets 4,748 5,389
Total assets 415,296 190,575
Current liabilities:    
Accounts payable 7,673 10,190
Accrued compensation and benefits 8,232 11,534
Operating lease liabilities 786 925
Debt 10,842 20,945
Accrued liabilities 45,036 33,100
Total current liabilities 72,569 76,694
Noncurrent operating lease liabilities 3,498 3,671
Noncurrent debt 40,802 30,212
Commitments and contingencies
Stockholders' equity:    
Common stock 522 390
Additional paid-in capital 1,799,841 1,493,469
Accumulated deficit (1,500,991) (1,413,642)
Accumulated other comprehensive loss (945) (219)
Total stockholders' equity 298,427 79,998
Total liabilities and stockholders' equity $ 415,296 $ 190,575