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Segment Reporting (Schedule of Major Product Line Revenues) (Details) - USD ($) | 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 from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 419,913,000 | $ 429,643,000 | $ 423,801,000 | $ 405,568,000 | $ 405,593,000 | $ 389,829,000 | $ 379,258,000 | $ 368,937,000 | $ 1,678,924,756 | $ 1,543,617,706 | $ 1,375,501,159
Automotive Products |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,639,692,243 | 1,506,872,004 | 1,340,122,274
Automotive Products | Automotive Mirrors |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,456,963,758 | 1,332,791,398 | 1,169,436,521
Automotive Products | HomeLink Modules |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 182,728,485 | 174,080,606 | 170,685,753
Other | Other Products Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 39,232,513 | $ 36,745,702 | $ 35,378,885

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