Quarterly report pursuant to Section 13 or 15(d)

Property and Equipment (Details Textual)

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Property and Equipment (Details Textual) (USD $)
In Thousands, unless otherwise specified
9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Sep. 30, 2012
Buildings and improvements [Member]
Sep. 30, 2012
Equipment [Member]
Property and Equipment (Textual) [Abstract]        
Capital expenditures $ 55,224 $ 135,897 $ 20,700 $ 55,200