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