Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies - Reconciliation between Basic and Diluted Earnings Per Share (Details

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Summary of Significant Accounting Policies - Reconciliation between Basic and Diluted Earnings Per Share (Details (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Earnings Per Share [Abstract]    
Net income (loss) attributable to Norwegian Cruise Line Holdings Ltd. $ (21,456)us-gaap_NetIncomeLoss $ 51,267us-gaap_NetIncomeLoss
Net income (loss) $ (21,456)us-gaap_ProfitLoss $ 51,692us-gaap_ProfitLoss
Basic weighted-average shares outstanding 224,301,117us-gaap_WeightedAverageNumberOfSharesOutstandingBasic 205,163,256us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Dilutive effect of awards   5,850,558us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment
Diluted weighted-average shares outstanding 224,301,117us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding 211,013,814us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Basic earnings (loss) per share (in dollars per share) $ (0.10)us-gaap_EarningsPerShareBasic $ 0.25us-gaap_EarningsPerShareBasic
Diluted earnings (loss) per share (in dollars per share) $ (0.10)us-gaap_EarningsPerShareDiluted [1] $ 0.24us-gaap_EarningsPerShareDiluted
[1] Due to a net loss, excludes 4,745,812 shares, as including these would be antidilutive.