Selected Balance Sheet Information
 3 Months Ended 12 Months Ended
Mar. 31, 2012
Dec. 31, 2011
Disclosure Text Block Supplement [Abstract]    
Supplemental Balance Sheet Disclosures [Text Block]

5.   Selected Balance Sheet Information 

Accounts receivable consisted of the following at March 31, 2012 and December 31, 2011 (in thousands):

 

    March 31, 2012     December 31, 2011  
Accounts receivable   $ 736     $ 692  
Bad debt allowance - customer     (296 )     (287 )
Accounts receivable, net   $ 440     $ 405  

   

Property and Equipment consisted of the following at March 31, 2012, and December 31, 2011 (in thousands) :

 

    March 31, 2012     December 31, 2011  
Manufacturing equipment   $ 400     $ 400  
Computer and office equipment     159       159  
Laboratory equipment     136       136  
Total     695       695  
Less accumulated depreciation     (392 )     (372 )
Property and equipment, net   $ 303     $ 323  

 

Depreciation expense for the three months ended March 31, 2012 and 2011 was $20,000 and $80,000, respectively.

 

 
4. Selected Balance Sheet Information

 

Accounts receivable (in thousands)

 

    December 31,  
    2011     2010  
Accounts receivable   $ 692     $ 472  
Bad debt allowance - customer     (287 )     (133 )
Total   $ 405     $ 339  

  

 Other current assets (in thousands)

 

    December 31,  
    2011     2010  
Grant receivable   $ -     $ 320  
Prepaid expenses     16       23  
Total   $ 16     $ 343  

 

Property and equipment (in thousands) 

 

    December 31,  
    2011     2010  
Leasehold improvements   $ -     $ 863  
Manufacturing equipment     400       333  
Computer and office equipment     159       160  
Laboratory equipment     136       214  
      695       1,570  
Less accumulated depreciation     (372 )     (1,095 )
Total   $ 323     $ 475  

 

Accrued expenses (in thousands) 

 

    December 31,  
    2011     2010  
Accrued vendor payments   $ 1     $ 105  
Bonus     -       100  
Compensation     28       5  
Total   $ 29     $ 210