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Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2015
Valuation and Qualifying Accounts [Abstract]  
Valuation and Qualifying Accounts

Valuation and Qualifying Accounts
Years Ended December 31, 2015, 2014 and 2013

 

            Additions            
      Balance at     charged to           Balance at
      beginning of     costs and           end of
(in thousands)     period     expenses     Deductions     period
                         
For the year ended December 31, 2015                        
Allowance for doubtful accounts (1)   $ 228    $ -    $ (213)   $ 15 
Allowance for prompt pay discounts (1)     893      6,949      (5,998)     1,844 
Inventory obsolescence allowance (2)     2,220      960      (732)     2,448 
                         
For the year ended December 31, 2014                        
Allowance for doubtful accounts (1)     84      211      (67)     228 
Allowance for prompt pay discounts (1)     532      4,693      (4,332)     893 
Inventory obsolescence allowance (2)     2,634      5,157      (5,571)     2,220 
                         
For the year ended December 31, 2013                        
Allowance for doubtful accounts (1)     39      98      (53)     84 
Allowance for prompt pay discounts (1)     728      3,053      (3,249)     532 
Inventory obsolescence allowance (2)     1,057      2,856      (1,279)     2,634 

 

(1) Shown as a reduction of accounts receivable. Charges related to prompt pay discounts are reflected as a reduction of revenue.
(2) Shown as a reduction of inventory. Charges related to obsolescence of inventory are reflected in "cost of product sales" in the consolidated statements of operations and comprehensive loss.