Commitments and Contingencies (Schedule of Warranty Activity) (Details) - Accrued Expenses - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Movement in Standard Product Warranty Accrual [Roll Forward]
Beginning balance	$ 460	$ 328	$ 58
Additions	667	388	290
Charges	(653)	(256)	(20)
Ending balance	$ 474	$ 460	$ 328