Domestic and Foreign Operations (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 18,570	$ 17,678	$ 36,152	$ 35,206
U.S. [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	15,733	14,099	30,163	28,259
Canada [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	1,011	1,127	2,013	2,223
Other International [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Revenues	$ 1,826	$ 2,452	$ 3,976	$ 4,724