General form of registration statement for all companies including face-amount certificate companies

Reconciliation between Basic and Diluted Earnings (Loss) Per Share (Detail)

v2.4.0.8
Reconciliation between Basic and Diluted Earnings (Loss) Per Share (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Jun. 30, 2013
Jun. 30, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Earnings Per Share [Line Items]                            
Net income (loss) attributable to Norwegian Cruise Line Holdings Ltd. $ (8,841)     $ 36,031           $ (105,236) $ 39,315         
Net income $ (8,915) $ 1,053 [1] $ 128,188 $ 36,031 $ 3,284 $ (1,941) $ 107,509 $ 29,224 $ (7,933) $ (106,415) $ 39,315 $ 168,556 $ 126,859 $ 22,986
Basic weighted-average shares outstanding 203,997,492     178,199,155           201,189,562 178,178,612 178,232,850 [2] 177,869,461 [2] 177,563,047 [2]
Dilutive effect of awards       750,769             782,637      
Diluted weighted-average shares outstanding 203,997,492     178,949,924           201,189,562 178,961,249 179,023,683 [2] 178,859,720 [2] 178,461,210 [2]
Basic earnings (loss) per share $ (0.04)     $ 0.20           $ (0.52) $ 0.22 $ 0.95 $ 0.71 $ 0.13
Diluted earnings (loss) per share $ (0.04)     $ 0.20           $ (0.52) $ 0.22 $ 0.94 $ 0.71 $ 0.13
Scenario, Previously Reported
                            
Earnings Per Share [Line Items]                            
Diluted weighted-average shares outstanding 203,997,492                 201,189,562       178,461,218
[1] Includes a non-recurring share-based compensation charge of $4.5 million related to a former CEO.
[2] We have retrospectively applied the exchange of ordinary shares due to the Corporate Reorganization as the effect is substantially the same as a stock split.