Inventories, Net and Significant Suppliers - Related Party Vendor (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		12 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2013 Executive Vice President [Member]	Sep. 30, 2013 Affiliated Entity [Member]	Dec. 31, 2012 Affiliated Entity [Member]	Sep. 30, 2013 Supplier Concentration Risk [Member] Cost of Goods, Total [Member] Affiliated Entity [Member]	Sep. 30, 2012 Supplier Concentration Risk [Member] Cost of Goods, Total [Member] Affiliated Entity [Member]	Sep. 30, 2013 Supplier Concentration Risk [Member] Cost of Goods, Total [Member] Affiliated Entity [Member]	Sep. 30, 2012 Supplier Concentration Risk [Member] Cost of Goods, Total [Member] Affiliated Entity [Member]
Related Party Transaction [Line Items]
Ownership Percentage in Third Party by Executive	40.00%
Related Party Purchases				$ 2,395	$ 2,471	$ 7,079	$ 5,978
Concentration Risk		2.80%	3.00%	3.10%	4.30%	3.20%	3.60%
Related Parties, Accounts Payable		$ 1,619	$ 1,815