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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 191,173 $ 105,138
Short-term investments 66,505 103,353
Accounts receivable, net 42,615 41,850
Inventory 42,800 41,905
Prepaid expenses and other current assets 23,733 21,950
Total current assets 366,826 314,196
Property and equipment, net 22,175 22,737
Right-of-use lease assets 14,903 16,277
Other assets 346 346
Total assets 404,250 353,556
Current liabilities:    
Accounts payable 11,242 525
Accrued clinical and manufacturing liabilities 23,907 49,962
Accrued payroll and employee liabilities 13,681 13,597
Other accrued liabilities 30,151 28,369
Current lease liabilities 3,162 2,997
Convertible notes payable to related parties, net of discount   7,053
Total current liabilities 82,143 102,503
Non-current lease liabilities 13,013 14,561
Non-current convertible notes payable, net 148,982  
Total liabilities 244,138 117,064
Stockholders’ equity:    
Common stock 1,019 913
Additional paid-in capital 1,665,429 1,628,070
Accumulated other comprehensive income 41 257
Accumulated deficit (1,506,377) (1,392,748)
Total stockholders’ equity 160,112 236,492
Total liabilities and stockholders’ equity $ 404,250 $ 353,556