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Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2013
Accrued Liabilities [Abstract]  
Schedule of Accrued Liabilities
Accrued expenses at December 31, 2013 and 2012 consists of the following:
 
 
(in thousands)
December 31,
 
2013
 
2012
Compensation
$
378

 
$
2,131

Professional fees
270

 
466

Accrued Alferon production costs
51

 
70

Other expenses
529

 
615

Due for returned product

 
113

 
$
1,228

 
$
3,395