Warranty (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Warranty [Abstract]
Product Warranty Period	5 years
Beginning Balance	$ 554	$ 434
Amounts charged to expense	119	193
Actual warranty costs paid	(75)	(73)
Ending balance	$ 598	$ 554