Segment Information (Schedule of Revenue from External Customers Long-Lived Assets, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Segment Reporting Information [Line Items]
Net Operating Revenue	$ 28,826	$ 18,723	$ 75,164	$ 54,082
United States [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	7,870	8,434	22,790	23,553
Canada [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	8,023	8,428	25,148	25,371
Europe [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	11,115	0	21,985	0
International Waters [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	1,731	1,778	4,968	4,919
Aruba [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	87	83	273	239
International [Member]
Segment Reporting Information [Line Items]
Net Operating Revenue	$ 20,956	$ 10,289	$ 52,374	$ 30,529