Annual report pursuant to Section 13 and 15(d)

Property, Plant and Equipment - Additional Information (Detail)

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Property, Plant and Equipment - Additional Information (Detail) (USD $)
1 Months Ended 12 Months Ended
Jun. 30, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant, and Equipment Disclosure [Line Items]        
Depreciation expense   $ 12,400,000 $ 12,300,000 $ 12,500,000
Capital Lease Obligations   800,000    
Accumulated depreciation on Capital Lease   145,215,000 135,823,000  
Impairment Charges Land Held For Sale 5,600,000 0 1,200,000  
Capital Lease
       
Property, Plant, and Equipment Disclosure [Line Items]        
Depreciation expense   53,000 53,000 53,000
Accumulated depreciation on Capital Lease   $ 344,000 $ 291,000 $ 238,000