Accounts Receivable, Net and Revenue Concentrations - Revenue by Significant Customer (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenue, Major Customer [Line Items]
Net sales	$ 138,389	$ 147,780	$ 146,315	$ 129,845	$ 136,134	$ 142,389	$ 136,109	$ 114,722	$ 562,329	$ 529,354	$ 463,090
Sales [Member] | DIRECTV [Member]
Revenue, Major Customer [Line Items]
Net sales									$ 58,622	$ 82,679	$ 78,325
Concentration risk									10.40%	15.60%	16.90%