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
6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Buildings improvements [Member]
Jun. 30, 2012
Equipment [Member]
Property and Equipment (Textual) [Abstract]        
Capital expenditures $ 34,504 $ 112,661 $ 22,500 $ 34,500