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Condensed Consolidated Balance Sheets (Unaudited) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Current assets    
Cash and cash equivalents $ 23,323 $ 31,249
Accounts receivables, net 157 349
Inventories, net 518 719
Prepaid expenses and other current assets 752 1,711
Total current assets 24,750 34,028
Property, plant and equipment, net 2,118 3,069
Total assets 26,868 37,097
Current liabilities    
Accounts payable 114 582
Accrued expenses 4,426 3,740
Warrant liability 555 2,310
Total current liabilities 5,095 6,632
Other non-current liabilities 1,088 366
Total liabilities 6,183 6,998
Commitments and contingencies (Note 11)      
Stockholders' equity    
Preferred stock, $.01 par value; 10,000,000 shares authorized; no shares issued and outstanding at September 30, 2014 and December 31, 2013 0 0
Common stock, $.01 par value; 170,000,000 shares authorized; 9,515,175 and 8,394,397 shares issued and 9,448,903 and 8,392,641 shares outstanding at September 30, 2014 and December 31, 2013, respectively 95 [1] 84 [1]
Additional paid-in capital 264,140 259,102
Accumulated deficit (243,568) (229,132)
Treasury stock, at cost; 1,757 shares at September 30, 2014 and December 31, 2013 (51) [1] (51) [1]
Accumulated other comprehensive income 69 96
Total stockholders' equity 20,685 30,099
Total liabilities and stockholders' equity $ 26,868 $ 37,097
[1] Reflects a one-for- sixteen (1:16) reverse stock split effected on April 8, 2014.