Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Property and Equipment Impairment Charges (Detail)

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Property and Equipment - Property and Equipment Impairment Charges (Detail) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Continuing Operations [Member]
     
Property, Plant and Equipment [Line Items]      
Property and equipment impairment charges $ 9,272 $ 440 $ 200
Discontinued Operations [Member]
     
Property, Plant and Equipment [Line Items]      
Property and equipment impairment charges   $ 510 $ 951