Domestic and Foreign Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 74,767	$ 69,911	$ 64,574
Long-lived assets	4,356	6,001	3,930
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Long-lived assets	4,054	5,501	3,330
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	4,090	4,280	3,713
Long-lived assets	284	469	600
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	8,143	8,853	10,200
Long-lived assets	$ 18	$ 31	$ 0