Revenue (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues	$ 443,836,000	$ 477,761,000	$ 468,711,000	$ 468,589,000	$ 453,409,000	$ 460,253,000	$ 454,981,000	$ 465,420,000	$ 1,858,897,406	$ 1,834,063,697	$ 1,794,872,578
Automotive Segment
Disaggregation of Revenue [Line Items]
Revenues									1,810,536,887	1,791,198,296
Other
Disaggregation of Revenue [Line Items]
Revenues									48,360,519	42,865,401
Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									1,810,536,887	1,791,198,296	1,758,127,468
Automotive Mirrors & Electronics | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenues									$ 1,638,600,272	1,598,589,777
Automotive Mirrors & Electronics | Automotive Segment | Minimum
Disaggregation of Revenue [Line Items]
Payment terms									15 days
Automotive Mirrors & Electronics | Automotive Segment | Maximum
Disaggregation of Revenue [Line Items]
Payment terms									90 days
HomeLink Modules | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenues									$ 171,936,615	192,608,519
Other Products (U.S.) | Other
Disaggregation of Revenue [Line Items]
Revenues									48,360,519	42,865,401	36,745,110
Fire Protection Products | Other
Disaggregation of Revenue [Line Items]
Revenues									$ 23,740,261	22,109,784
Fire Protection Products | Other | Minimum
Disaggregation of Revenue [Line Items]
Payment terms									30 days
Fire Protection Products | Other | Maximum
Disaggregation of Revenue [Line Items]
Payment terms									75 days
Windows Products | Other
Disaggregation of Revenue [Line Items]
Revenues									$ 24,620,258	20,755,617
Dimmable Aircraft Windows | Other | Minimum
Disaggregation of Revenue [Line Items]
Payment terms									30 days
Dimmable Aircraft Windows | Other | Maximum
Disaggregation of Revenue [Line Items]
Payment terms									45 days
United States | Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									$ 569,939,756	583,672,971	567,492,812
United States | Other Products (U.S.)
Disaggregation of Revenue [Line Items]
Revenues									48,360,519	42,865,401	36,745,110
Germany | Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									296,276,971	333,002,878	351,123,204
Japan | Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									225,577,146	209,311,790	185,261,067
Mexico | Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									160,967,900	106,111,515	93,603,796
Other Countries | Automotive Products
Disaggregation of Revenue [Line Items]
Revenues									$ 557,775,114	$ 559,099,142	$ 560,646,589