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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Current assets      
Cash and cash equivalents $ 2,029 $ 3,999 $ 4,409
Restricted cash 1,087 1,325 27,287
Accounts receivables, net 280 317 403
Inventories 1,280 1,248 660
Prepaid expenses and other current assets 554 700 698
Deferred financing costs   0 699
Total current assets 5,230 7,589 34,156
Property, plant and equipment, net 1,188 1,298 1,083
Total assets 6,418 8,887 35,239
Current liabilities      
Accounts payable 4,580 3,846 594
Accrued expenses 3,526 3,408 3,407
Convertible notes payable, net of debt discount   0 13,343
Warrant liability 4,169 560 18,751
Total current liabilities 12,275 7,814 36,095
Deferred revenue   0 30
Other non-current liabilities 345 395 604
Total liabilities 12,620 8,209 36,729
Commitments and Contingencies
Stockholders' equity (deficit)      
Preferred stock 0 0 0
Common stock 9 [1] 2 [1],[2] 0 [2]
Additional paid-in capital 311,477 325,517 277,790
Accumulated deficit (317,645) (324,832) (279,188)
Treasury stock (51) [1] (51) [1],[2] (51) [2]
Accumulated other comprehensive income (loss) 8 42 (41)
Total stockholders' (deficit) equity (6,202) 678 (1,490)
Total liabilities and stockholders' equity (deficit) $ 6,418 $ 8,887 $ 35,239
[1] reflects a one-for-three hundred and fifty (1:350) reverse stock split effected on November 6, 2017 and a one-for-five hundred (1:500) reverse stock split effected on May 2, 2018.
[2] reflects a one-for-sixteen (1:16) reverse stock split effected on July 21, 2016, a one-for-three hundred and fifty (1:350) reverse stock split effected on November 6, 2017 and a one-for-five hundred (1:500) reverse stock split effected on May 2, 2018.