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v3.19.1

Revenue (Details) - USD ($) | 3 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 468,588,997 | $ 465,420,105
Automotive Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 455,798,643 | 454,965,374
Other Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 12,790,354 | 10,454,731
Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 455,798,643 | 454,965,374
Automotive Mirrors & Electronics | Automotive Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 408,971,666 | 404,241,628
HomeLink Modules | Automotive Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 46,826,977 | 50,723,746
Fire Protection Products | Other Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 5,852,232 | 5,279,658
Windows Products | Other Segment |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 6,938,122 | 5,175,073
U.S. | Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 141,383,064 | 140,312,987
U.S. | Other Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 12,790,354 | 10,454,731
Germany | Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 78,449,927 | 91,793,541
Japan | Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 56,333,694 | 49,832,997
Mexico | Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | 44,410,388 | 23,098,810
Other | Automotive Products |  |
Disaggregation of Revenue [Line Items] |  |
Revenue | $ 135,221,570 | $ 149,927,039

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