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Commitments and Contingencies - Additional Information (Detail)
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1 Months Ended | 1 Months Ended | 6 Months Ended | |||||||||||||
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Sep. 30, 2012
USD ($)
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Feb. 28, 2011
LegalMatter
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Dec. 31, 2012
USD ($)
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Dec. 31, 2012
GBP (£)
|
Dec. 31, 2011
USD ($)
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Dec. 31, 2010
USD ($)
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Sep. 30, 2010
Norwegian Breakaway and Norwegian Getaway
T
Vessel
Seat
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Jun. 30, 2013
Norwegian Breakaway and Norwegian Getaway
USD ($)
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Jun. 30, 2013
Norwegian Breakaway and Norwegian Getaway
EUR (€)
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Dec. 31, 2012
Norwegian Breakaway and Norwegian Getaway
USD ($)
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Dec. 31, 2012
Norwegian Breakaway and Norwegian Getaway
EUR (€)
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Dec. 31, 2012
Breakaway Plus
USD ($)
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Dec. 31, 2012
Breakaway Plus
EUR (€)
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Oct. 31, 2012
Breakaway Plus
Vessel
T
Seat
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Jun. 30, 2013
New Breakaway Plus class ships
USD ($)
Seat
Vessel
T
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Jun. 30, 2013
New Breakaway Plus class ships
EUR (€)
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| Commitments and Contingencies Disclosure [Line Items] | ||||||||||||||||
| Total expense related to operating lease | $ 9,500,000 | $ 9,100,000 | $ 12,400,000 | |||||||||||||
| Cruising ships to be built | 2 | 1 | 2 | 2 | ||||||||||||
| Capacity of ship, tons | 144,000 | 163,000 | 163,000 | 163,000 | ||||||||||||
| Capacity of ship, berths | 4,000 | 4,200 | 4,200 | 4,200 | ||||||||||||
| Aggregate contract price of new ships | 814,300,000 | 625,900,000 | 1,700,000,000 | 1,300,000,000 | 921,400,000 | 698,400,000 | 1,800,000,000 | 1,400,000,000 | ||||||||
| Export credit facility financing as percentage of contract price | 90.00% | 80.00% | 80.00% | 80.00% | ||||||||||||
| Performance guarantee required to be maintained | 15,000,000 | |||||||||||||||
| Security guarantee, current value | 3,200,000 | |||||||||||||||
| Number of individual plaintiff's claims | 6 | |||||||||||||||
| Awarded wages to plaintiffs | $ 100,000 | |||||||||||||||
| Scheduled delivery date of ships under construction | January 2014 | Fourth quarter of 2015 and the first quarter of 2017 | Fourth quarter of 2015 and the first quarter of 2017 | |||||||||||||