v3.22.1
Condensed Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Current assets    
Cash and cash equivalents  $ 55,611 $ 82,647
Investment securities, available-for-sale 47,651 32,720
Inventory 1,815 1,780
Other current assets 1,865 2,283
Total current assets 106,942 119,430
Property and equipment, net 3,248 3,026
Operating lease right-of-use asset 5,368 5,577
Restricted cash 1,092 1,092
Intangible assets, net 105 115
Other assets 1,014 985
Total assets 117,769 130,225
Current liabilities    
Accounts payable 1,919 3,584
Accrued liabilities 1,288 1,170
Contract liabilities 4,915 5,265
Other current liabilities  474 1,181
Current portion of long-term debt 98 392
Current portion of operating lease liability 686 849
Current portion of finance lease obligations 24 21
Total current liabilities 9,404 12,462
Operating lease liability, net of current portion 4,882 4,983
Finance lease obligations, net of current portion 15 26
Total liabilities 14,301 17,471
Shareholders' equity    
Preferred stock, par value $0.001; 25,000 shares authorized; no and     no shares issued and outstanding
Common stock, par value $0.001; 210,000 shares authorized;     164,887 and 164,363 shares issued and outstanding at March 31,     2022 and December 31, 2021, respectively 165 164
Additional paid-in capital 746,028 742,042
Accumulated other comprehensive loss (124) (19)
Accumulated deficit (642,601) (629,433)
Total shareholders' equity 103,468 112,754
Total liabilities and shareholders' equity $ 117,769 $ 130,225

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