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 ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Earnings Per Share [Abstract]        
Net income attributable to Norwegian Cruise Line Holdings Ltd. $ 158,494 $ 111,616 $ 137,038 $ 162,883
Net income $ 158,494 $ 113,279 $ 137,038 $ 164,971
Basic weighted-average shares outstanding 225,698,078 204,965,718 225,003,460 205,063,870
Dilutive effect of share awards 4,530,066 5,507,273 4,660,750 5,678,785
Diluted weighted-average shares outstanding 230,228,144 210,472,991 229,664,210 210,742,655
Basic earnings per share (in dollars per share) $ 0.70 $ 0.54 $ 0.61 $ 0.79
Diluted earnings per share (in dollars per share) $ 0.69 $ 0.54 $ 0.60 $ 0.78