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Plant Closure (Details) (USD $)
1 Months Ended
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Sep. 30, 2012
Facility closing
Plant disclosure        
Severance costs       $ 1,000,000
Percentage severance cost allocated to cost of sales       85.00%
Net book value of the long-lived assets, including land, building and equipment 211,132,000 195,716,000 191,016,000 2,900,000
Product code approval       $ 1,200,000