Subsequent Event (Detail Textuals) - Subsequent event	Oct. 31, 2015 Gross_Ton Berth
Subsequent Event [Line Items]
Capacity of Norwegian Escape, tons \| Gross_Ton	164,600
Capacity of Norwegian Escape, berths	4,200

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration