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Property and Equipment (Detail) (USD $)
In Thousands, unless otherwise specified
6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended 6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
Land
Dec. 31, 2012
Land
Jun. 30, 2013
Buildings
Dec. 31, 2012
Buildings
Jun. 30, 2013
Buildings
Minimum
Jun. 30, 2013
Buildings
Maximum
Jun. 30, 2013
Building Improvements
Dec. 31, 2012
Building Improvements
Jun. 30, 2013
Building Improvements
Minimum
Jun. 30, 2013
Building Improvements
Maximum
Jun. 30, 2013
Machinery and Equipment
Dec. 31, 2012
Machinery and Equipment
Jun. 30, 2013
Machinery and Equipment
Minimum
Jun. 30, 2013
Machinery and Equipment
Maximum
Jun. 30, 2013
Furniture, fixtures and office equipment
Dec. 31, 2012
Furniture, fixtures and office equipment
Jun. 30, 2013
Furniture, fixtures and office equipment
Minimum
Jun. 30, 2013
Furniture, fixtures and office equipment
Maximum
Jun. 30, 2013
Computer Equipment and Software
Dec. 31, 2012
Computer Equipment and Software
Jun. 30, 2013
Computer Equipment and Software
Maximum
Jun. 30, 2013
Leasehold Improvements
Dec. 31, 2012
Leasehold Improvements
Jun. 30, 2013
Construction in Progress
Dec. 31, 2012
Construction in Progress
Property, Plant and Equipment [Line Items]                                                      
Estimated Useful Life (Years)             39 years 40 years     5 years 40 years     3 years 15 years     5 years 10 years     3 years        
Property and equipment - gross $ 286,606 $ 285,210 $ 5,273 $ 5,273 $ 54,948 $ 54,948     $ 114,245 $ 114,245     $ 81,368 $ 81,382     $ 5,164 $ 5,239     $ 11,834 $ 11,840   $ 17 $ 17 $ 13,757 $ 12,266
Less accumulated depreciation and amortization (107,039) (101,249)                                                  
Property and equipment - net $ 179,567 $ 183,961