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Unaudited Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Assets    
Cash and cash equivalents $ 76,779 $ 112,346
Short-term investments 4,199 0
Accounts and other receivables 2,820 1,528
Prepaid expenses and other current assets 3,637 1,182
Total current assets 87,435 115,056
Inventories 779 0
Property and equipment, net 904 884
Operating lease right-of-use assets 1,165 1,141
Long-term investments 33,535 15,422
Other long-term assets 440 438
Total assets 124,258 132,941
Liabilities and stockholders' equity    
Accounts payable and accrued expenses 3,600 3,038
Current portion of operating lease liabilities 469 356
Current portion of discount and rebate liabilities 1,796 0
Other current liabilities 1,294 836
Total current liabilities 7,159 4,230
Line of credit payable 12,800 0
Derivative and warrant liability 57 330
Operating lease liabilities, less current portion 1,082 1,232
Discount and rebate liabilities, less current portion 3,900 0
Other long-term liabilities 27 31
Total liabilities 25,025 5,823
Commitments and contingencies (Note D)
Stockholders’ equity:    
Common stock, $0.0001 par value, 250,000,000 shares authorized, 35,399,267 shares issued and 34,489,314 shares outstanding as of June 30, 2022; 35,325,801 shares issued and 35,005,640 shares outstanding as of December 31, 2021 3 4
Additional paid-in capital 399,701 396,957
Treasury stock, at cost (7,536) (2,814)
Accumulated deficit (292,935) (267,029)
Total stockholders' equity 99,233 127,118
Total liabilities and stockholders' equity 124,258 132,941
Undesignated Preferred Stock [Member]    
Stockholders’ equity:    
Undesignated preferred stock, $0.0001 par value, 10,000,000 shares authorized, no shares issued or outstanding as of June 30, 2022 or December 31, 2021 $ 0 $ 0