Segment Reporting and Concentrations (Details 1) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Segment Reporting Information [Line Items]
Revenues	$ 15,642	$ 14,063	$ 31,340	$ 27,865
Other - principally Europe
Segment Reporting Information [Line Items]
Revenues	1,537	1,294	2,945	2,824
United States
Segment Reporting Information [Line Items]
Revenues	8,079	6,615	16,351	13,203
The Netherlands
Segment Reporting Information [Line Items]
Revenues	2,529	2,648	5,090	4,760
United Kingdom
Segment Reporting Information [Line Items]
Revenues	1,999	2,050	3,980	4,251
Canada
Segment Reporting Information [Line Items]
Revenues	$ 1,498	$ 1,456	$ 2,974	$ 2,827