Accounts Receivable, Net and Revenue Concentrations - Revenue by Significant Customer (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Revenue, Major Customer [Line Items]
Net sales	$ 142,389	$ 124,871	$ 393,220	$ 345,307
Sales [Member] | DIRECTV [Member]
Revenue, Major Customer [Line Items]
Net sales	$ 21,667	$ 23,691	$ 64,651	$ 59,117
Concentration risk	15.20%	19.00%	16.40%	17.10%