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CONSOLIDATED CONDENSED BALANCE SHEETS (UNAUDITED) - USD ($)
$ in Thousands
Mar. 31, 2020
Dec. 31, 2019
Current assets:    
Cash and cash equivalents $ 16,061 $ 17,552
Accounts receivable 978 1,169
Restricted cash   40
Inventories, net 107 107
Other current assets 551 957
Total current assets 17,697 19,825
Property and equipment, net 2,096 2,179
Operating lease right-of-use assets 744 781
Other assets 58 72
Goodwill 372 372
Total assets 20,967 23,229
Current liabilities:    
Accounts payable and accrued expenses 3,670 3,279
Operating lease liability 136 147
Term loan obligations, net of discount 11,182 11,060
Total current liabilities 14,988 14,486
Other noncurrent liabilities 8 8
Noncurrent operating lease liability 624 646
Warrant liability 5,262 6,929
Total liabilities 20,882 22,069
Commitments and contingencies (Notes 9)
Stockholders’ equity:    
Preferred stock, $0.001 par value; 5,000,000 shares authorized; 1,959 shares issued and outstanding at March 31, 2020 and December 31, 2019
Common stock, $0.001 par value; 100,000,000 shares authorized; 3,880,588 shares issued and outstanding at March 31, 2020 and December 31, 2019 4 4
Additional paid-in capital 426,438 426,426
Accumulated deficit (426,357) (425,270)
Total stockholders’ equity 85 1,160
Total liabilities and stockholders’ equity $ 20,967 $ 23,229