Segment Information (Schedule of Long-Lived Assets, by Geographical Areas) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Long Lived Assets	$ 136,009	$ 110,540
United States [Member]
Segment Reporting Information [Line Items]
Long Lived Assets	54,662	55,442
Canada [Member]
Segment Reporting Information [Line Items]
Long Lived Assets	47,178	49,754
Europe [Member]
Segment Reporting Information [Line Items]
Long Lived Assets	33,287	4,157
International Waters [Member]
Segment Reporting Information [Line Items]
Long Lived Assets	882	1,187
International [Member]
Segment Reporting Information [Line Items]
Long Lived Assets	$ 81,347	$ 55,098