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, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue, Major Customer [Line Items]
Net sales	$ 147,780	$ 142,389	$ 423,940	$ 393,220
Sales [Member] | DIRECTV [Member]
Revenue, Major Customer [Line Items]
Net sales	$ 18,201	$ 21,667	$ 44,733	$ 64,651
Concentration risk	12.30%	15.20%	10.60%	16.40%