Segment Reporting (Schedule of Major Product Line Revenues) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Revenue from External Customer [Line Items]
Revenues	$ 529,864,000	$ 474,639,000	$ 229,926,000	$ 453,762,000	$ 443,836,000	$ 477,761,000	$ 468,711,000	$ 468,589,000	$ 1,688,189,405	$ 1,858,897,406	$ 1,834,063,697
Automotive Products
Revenue from External Customer [Line Items]
Revenues									1,648,198,143	1,810,536,887	1,791,198,296
Automotive Products | Automotive Mirrors
Revenue from External Customer [Line Items]
Revenues									1,520,628,604	1,638,600,272	1,598,589,777
Automotive Products | HomeLink Modules
Revenue from External Customer [Line Items]
Revenues									127,569,539	171,936,615	192,608,519
Other
Revenue from External Customer [Line Items]
Revenues									39,991,262	48,360,519	42,865,401
Other | Other Products Revenue
Revenue from External Customer [Line Items]
Revenues									$ 39,991,262	$ 48,360,519	$ 42,865,401