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