Inventories, net (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Summary of Inventory reserves
Beginning Balance	$ 2,553
Ending Balance	3,187	$ 2,553
Inventory Valuation Reserve [Member]
Summary of Inventory reserves
Beginning Balance	2,553	2,314	$ 2,410
Provision	1,145	420	316
Write-offs	(511)	(181)	(412)
Ending Balance	$ 3,187	$ 2,553	$ 2,314