Operating Segments and Related Information (by Country) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenue, net	$ 39,183	$ 35,137	$ 35,291	$ 31,233	$ 34,957	$ 33,365	$ 36,995	$ 32,985	$ 140,844	$ 138,302	$ 161,552
Long-lived assets	37,550				30,517				37,550	30,517
United States [Member]
Segment Reporting Information [Line Items]
Revenue, net									80,857	80,484	88,859
Long-lived assets	34,429				26,281				34,429	26,281
United Kingdom [Member]
Segment Reporting Information [Line Items]
Revenue, net									17,501	19,540	23,817
Long-lived assets	2,047				2,939				2,047	2,939
Canada [Member]
Segment Reporting Information [Line Items]
Revenue, net									14,531	12,388	15,851
France [Member]
Segment Reporting Information [Line Items]
Revenue, net									6,934	6,186	8,508
Australia [Member]
Segment Reporting Information [Line Items]
Revenue, net									7,354	6,111	5,762
Mexico [Member]
Segment Reporting Information [Line Items]
Revenue, net									4,900	4,340	4,653
Brazil [Member]
Segment Reporting Information [Line Items]
Revenue, net									1,169	1,223	3,050
New Zealand [Member]
Segment Reporting Information [Line Items]
Revenue, net									979	596	1,353
Spain [Member]
Segment Reporting Information [Line Items]
Revenue, net									964	1,019	1,275
Thailand [Member]
Segment Reporting Information [Line Items]
Revenue, net									654	933	986
Hong Kong [Member]
Segment Reporting Information [Line Items]
Revenue, net									824	864	903
Colombia [Member]
Segment Reporting Information [Line Items]
Revenue, net									583	610	841
Other [Member]
Segment Reporting Information [Line Items]
Revenue, net									3,594	4,008	$ 5,694
Long-lived assets	$ 1,074				$ 1,297				$ 1,074	$ 1,297