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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Sep. 30, 2015
Dec. 31, 2014
Current assets    
Cash and cash equivalents $ 16,666 $ 20,469
Accounts receivables, net 432 174
Inventories 402 349
Prepaid expenses and other current assets 665 974
Total current assets 18,165 21,966
Property, plant and equipment, net 1,402 1,798
Total assets 19,567 23,764
Current liabilities    
Accounts payable 221 748
Accrued expenses 2,022 3,603
Warrant liability 2,935 225
Total current liabilities 5,178 4,576
Other non-current liabilities 874 1,043
Total liabilities $ 6,052 $ 5,619
Commitments and Contingencies
Stockholders' equity    
Preferred stock, $.01 par value; 10,000,000 shares authorized; no shares issued and outstanding at September 30, 2015 and December 31, 2014, respectively
Common stock, $.01 par value; 170,000,000 shares authorized; 22,341,707 and 9,740,397 shares issued and 21,763,864 and 9,708,841 shares outstanding at September 30, 2015 and December 31, 2014, respectively $ 223 $ 97
Additional paid-in capital 269,460 264,592
Accumulated deficit (256,125) (246,513)
Treasury stock, at cost; 1,757 shares at September 30, 2015 and December 31, 2014, respectively (51) (51)
Accumulated other comprehensive income 8 20
Total stockholders' equity 13,515 18,145
Total liabilities and stockholders' equity $ 19,567 $ 23,764