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v3.21.1

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

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