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Property and Equipment - Additional Information (Detail) (USD $)
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3 Months Ended | 9 Months Ended | 12 Months Ended | ||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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| Property, Plant and Equipment [Line Items] | |||||||
| Depreciation and amortization expense | $ 56,097,000 | $ 48,423,000 | $ 158,699,000 | $ 140,900,000 | $ 189,537,000 | $ 183,985,000 | $ 170,191,000 |
| Repairs and maintenance expenses including Dry-docking expenses | 44,700,000 | 64,700,000 | 60,900,000 | ||||
| Interest costs capitalized | $ 22,100,000 | $ 16,700,000 | $ 8,800,000 | ||||
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- Definition
The aggregate costs of keeping the property in good condition but that do not appreciably prolong the life or increase the value of the property. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of interest capitalized during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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