Business Segment and Geographic Area Information - Geographic Area Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	$ 20,639	$ 17,494
Long-Lived Assets	23,984	22,512
United States [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	19,509	17,007
Long-Lived Assets	23,984	22,512
Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	826	202
Long-Lived Assets	0	0
Middle East [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	3	0
Long-Lived Assets	0	0
Rest of the World [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Sales	301	285
Long-Lived Assets	$ 0	$ 0