Inventories, net (Details 1) (USD $) In Thousands, unless otherwise specified					12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Inventory Valuation Reserve [Member]	Dec. 31, 2012 Inventory Valuation Reserve [Member]	Dec. 31, 2011 Inventory Valuation Reserve [Member]
Summary of Inventories reserves
Beginning Balance	$ 2,314	$ 2,410	$ 2,012	$ 2,096
Provision					316	735	47
Write-offs					(412)	(337)	(131)
Ending Balance	$ 2,314	$ 2,410	$ 2,012	$ 2,096