Annual report pursuant to Section 13 and 15(d)

Property and Equipment - Additional Information (Detail)

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Property and Equipment - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Property, Plant and Equipment [Line Items]      
Depreciation and amortization expense $ 215,593,000 $ 189,537,000 $ 183,985,000
Repairs and maintenance expenses including Dry-docking expenses 67,100,000 44,700,000 64,700,000
Interest costs capitalized $ 26,300,000 $ 22,100,000 $ 16,700,000