Inventories, Net and Significant Suppliers - Related Party Vendor (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Senior Vice President of Manufacturing
Related Party Transaction [Line Items]
Ownership percentage in third party by executive	40.00%
Supplier Concentration Risk | Cost of goods | Related party vendor
Related Party Transaction [Line Items]
Related party purchases	$ 9,846	$ 8,845	$ 8,677
Concentration risk	3.50%	3.80%	3.00%
Supplier Concentration Risk | Accounts payable | Related party vendor
Related Party Transaction [Line Items]
Related party accounts payable	$ 2,439	$ 1,815
Concentration risk	4.20%	3.00%