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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 188,970 $ 181,131
Marketable securities 108,346 91,400
Accounts receivable 45,248 23,081
Inventory 6,476 0
Prepaid expenses and other current assets 17,956 16,982
Total current assets 366,996 312,594
Property, equipment and software, net 39,395 42,225
Other assets 19,520 23,924
Total assets 425,911 378,743
Current liabilities:    
Accounts payable 9,818 8,031
Accrued expenses and other current liabilities 39,174 34,198
Deferred revenue 16,565 4,456
Lease liabilities 4,367 3,988
Total current liabilities 69,924 50,673
Deferred revenue, net of current portion 13,476 6,926
Lease liabilities, net of current portion 23,208 25,260
Other non current liabilities 258 0
Total liabilities 106,866 82,859
Stockholders' equity:    
Common stock, $0.01 par value -- 125,000,000 shares authorized, 60,133,447 and 56,244,771 shares outstanding at June 30, 2021 and December 31, 2020, respectively 601 562
Additional paid-in capital 1,181,471 1,067,150
Accumulated other comprehensive income (loss) 1 (7)
Accumulated deficit (863,028) (771,821)
Total stockholders' equity 319,045 295,884
Total liabilities and stockholders' equity $ 425,911 $ 378,743