Inventories, Net and Significant Suppliers - Related Party Vendor (Details) (Senior Vice President of Manufacturing, USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Related Party Transaction [Line Items]
Ownership Percentage in Third Party by Executive	40.00%
Supplier Concentration Risk [Member]
Related Party Transaction [Line Items]
Related Party, Accounts Payable	$ 2,378	$ 2,439
Concentration risk	3.40%	4.20%
Supplier Concentration Risk [Member] | Cost of goods, Total [Member]
Related Party Transaction [Line Items]
Related Party Purchases	$ 9,188	$ 9,846	$ 8,845
Concentration risk	3.20%	3.50%	3.80%