Revenue (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Revenue	$ 483,724,839	$ 453,761,726
Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	475,617,436	439,855,587
Other Segment
Disaggregation of Revenue [Line Items]
Revenue	8,107,403	13,906,139
Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	475,617,436	439,855,587
Automotive Mirrors & Electronics | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	435,506,930	401,085,314
HomeLink Modules | Automotive Segment
Disaggregation of Revenue [Line Items]
Revenue	40,110,506	38,770,273
Fire Protection Products | Other Segment
Disaggregation of Revenue [Line Items]
Revenue	5,804,158	6,168,751
Windows Products | Other Segment
Disaggregation of Revenue [Line Items]
Revenue	2,303,245	7,737,388
U.S. | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	146,425,317	135,581,918
U.S. | Other Products
Disaggregation of Revenue [Line Items]
Revenue	8,107,403	13,906,139
Germany | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	69,415,184	72,785,724
Japan | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	53,903,595	51,136,933
Mexico | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	31,745,988	45,950,481
Other | Automotive Products
Disaggregation of Revenue [Line Items]
Revenue	$ 174,127,352	$ 134,400,531