Segment Information (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014 item	Dec. 31, 2013
Segment Reporting Information [Line Items]
Number of Co-CEOs	2
Revenues	$ 120,048	$ 104,588
Long lived assets	134,627	132,639
Corporate and Other [Member]
Segment Reporting Information [Line Items]
Revenues	7,551	6,829
Long lived assets	2,391	1,732
Corporate and Other [Member] | International Waters [Member]
Segment Reporting Information [Line Items]
Revenues	7,100	6,400
Long lived assets	1,500	800
Corporate and Other [Member] | Aruba [Member]
Segment Reporting Information [Line Items]
Revenues	400	400
Corporate and Other [Member] | Argentina [Member]
Segment Reporting Information [Line Items]
Revenues	100
Corporate and Other [Member] | United States [Member]
Segment Reporting Information [Line Items]
Long lived assets	800	700
Corporate and Other [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Long lived assets	$ 100	$ 200