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Accounts Receivable, Net and Revenue Concentrations - Revenue by Significant Customer (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 160,542 | $ 169,185 | $ 170,986 | $ 150,658 | $ 162,110 | $ 160,467 | $ 147,551 | $ 132,705 | $ 651,371 | $ 602,833 |  | $ 562,329 |
Net trade receivables | 119,522 |  |  |  | 117,761 |  |  |  | 119,522 | 117,761 |  |  |
Revenue, Net | Comcast Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 149,476 | $ 129,475 | [1] | $ 0 | [1]
Concentration risk |  |  |  |  |  |  |  |  | 22.90% | 21.50% | [1] | 0.00% | [1]
Revenue, Net | DIRECTV |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 68,110 | $ 74,857 |  | $ 58,622 |
Concentration risk |  |  |  |  |  |  |  |  | 10.50% | 12.40% |  | 10.40% |
Trade Accounts Receivable | Customer Concentration Risk | Comcast Corporation |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net trade receivables | 23,700 |  |  |  | $ 29,400 |  |  |  | $ 23,700 | $ 29,400 |  |  |
Concentration risk |  |  |  |  |  |  |  |  | 19.00% | 24.10% |  |  |
Trade Accounts Receivable | Customer Concentration Risk | DIRECTV |  |  |  |  |  |  |  |  |  |  |  |  |
Revenue, Major Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net trade receivables | $ 12,900 |  |  |  |  |  |  |  | $ 12,900 |  |  |  |
Concentration risk |  |  |  |  |  |  |  |  | 10.30% |  |  |  |
[1] | Net sales to this customer did not total more than 10% of our total net sales in this period.

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(4)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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