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Inventories
9 Months Ended
Sep. 30, 2012
Inventories  
Inventories

H. Inventories

        The following table sets forth the Company's inventories as of September 30, 2012 and December 31, 2011:

 
  As of September 30,
2012
  As of December 31,
2011
 
 
  (in thousands)
 

Raw materials

  $ 4,506   $ 32,213  

Work-in-process

    58,452     47,010  

Finished goods

    23,317     33,207  
           

Total

  $ 86,275   $ 112,430  
           

        The Company's inventories as of September 30, 2012 consisted of INCIVEK™ and KALYDECO inventory costs and as of December 31, 2011 consisted solely of INCIVEK inventory costs. The Company began capitalizing inventory costs for KALYDECO on January 1, 2012.

        The Company values its inventories at the lower of cost or market. The Company determines the cost of its inventories, which includes amounts related to materials and manufacturing overhead, on a first-in, first-out basis. The Company performs an assessment of the recoverability of capitalized inventory during each reporting period, and writes down any excess and obsolete inventories to their net realizable value in the period in which the impairment is first identified.

        The field of treatment of HCV infection is highly competitive and characterized by rapid technological advances. In the second quarter of 2012, the Company recorded within cost of product revenues a $78.0 million lower of cost or market charge for excess and obsolete INCIVEK inventories, which included an accrual for estimated expenses related to the Company's non-cancelable purchase commitments. The charge and corresponding inventory write-down were based on the Company's analysis of its INCIVEK inventory levels as of June 30, 2012 in relation to its commercial outlook for INCIVEK. As part of the analysis, the Company considered, among other factors, (i) decreases in demand for INCIVEK and the Company's expectation that demand would decrease further in the second half of 2012, (ii) the potential development by the Company and its competitors of other drugs and combination treatments for HCV infection, (iii) positive results released in the second quarter of 2012 from Phase 2 clinical trials of drug candidates being developed by its competitors and (iv) the initiation by the Company's competitors of a number of additional Phase 2 and Phase 3 clinical trials of drug candidates for the treatment of HCV infection. The $78.0 million charge in the second quarter of 2012 for excess and obsolete INCIVEK inventories affected the net income (loss) attributable to Vertex per diluted share, net of tax, by $(0.36) for the nine months ended September 30, 2012.