Revenue (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 474,638,584	$ 477,761,417	$ 1,158,325,866	$ 1,415,061,768
Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	464,673,587	464,280,707	1,126,597,020	1,376,704,413
Other Segment
Disaggregation of Revenue [Line Items]
Revenue	9,964,997	13,480,710	31,728,846	38,357,355
Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	464,673,587	464,280,707	1,126,597,020	1,376,704,413
Automotive Mirrors & Electronics | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	427,426,159	418,746,334	1,039,112,012	1,241,147,268
HomeLink Modules | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	37,247,428	45,534,373	87,485,008	135,557,145
Fire Protection Products | Other Segment
Disaggregation of Revenue [Line Items]
Revenue	6,378,303	5,977,245	17,384,594	18,188,744
Windows Products | Other Segment
Disaggregation of Revenue [Line Items]
Revenue	3,586,694	7,503,465	14,344,252	20,168,611
U.S. | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	156,521,110	145,798,028	347,952,489	431,729,037
U.S. | Other Products
Disaggregation of Revenue [Line Items]
Revenue	9,964,997	13,480,710	31,728,846	38,357,355
Germany | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	56,514,969	74,047,596	153,166,702	225,649,215
Japan | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	64,353,263	60,641,977	152,824,143	172,697,963
Mexico | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	33,342,171	43,884,609	92,882,253	130,473,702
Other | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	$ 153,942,074	$ 139,908,497	$ 379,771,433	$ 416,154,496