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Segment Reporting (Schedule of Major Product Line Revenues) (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues | $ 405,593,000 | $ 389,829,000 | $ 379,258,000 | $ 368,937,000 | $ 350,411,000 | $ 350,914,000 | $ 338,437,000 | $ 335,739,000 | $ 1,543,617,706 | $ 1,375,501,159 | $ 1,171,864,171
Automotive Products |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,506,872,004 | 1,340,122,274 | 1,143,988,127
Automotive Products | Automotive Mirrors |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 1,332,791,398 | 1,169,436,521 | 1,108,123,983
Automotive Products | HomeLink Modules |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 174,080,606 | 170,685,753 | 35,864,144
Other |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | 36,745,702 | 35,378,885 | 27,876,044
Other | Other Products Revenue |  |  |  |  |  |  |  |  |  |  |
Revenue from External Customer [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenues |  |  |  |  |  |  |  |  | $ 36,745,702 | $ 35,378,885 | $ 27,876,044

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