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Litigation (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Claims
Dec. 31, 2011
Claims
Litigation (Textual) [Abstract]    
Number of claims inactive or transferred to MDL panel 1,632 1,668
Number of claims against inactive subsidiary not included within Coverage Arrangement 300  
Reserves for total costs for asbestos liability claims pending or projected $ 181,022  
Percentage attributable to settlement costs for unasserted claims projected to be filed 73.00%  
Insurance recoveries receivable $ 118,115