Warranty (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Warranty [Abstract]
Product Warranty Period	5 years
Beginning Balance	$ 434	$ 564
Amounts charged to expense	174	(10)
Actual warranty costs paid	(50)	(60)
Ending balance	$ 558	$ 494