Segment Information (Schedule of Revenue from External Customers, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Net Operating Revenue	$ 104,588	$ 71,828
United States [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	29,193	30,432
Canada [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	33,748	34,465
Europe [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	34,820	8
International Waters [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	6,456	6,601
Aruba [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	371	322
International [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	$ 75,395	$ 41,396