Revenue (Details)	3 Months Ended
	Mar. 31, 2018 USD ($)
Disaggregation of Revenue [Line Items]
Total revenue	$ 465,420,105
Automotive Segment
Disaggregation of Revenue [Line Items]
Total revenue	454,965,374
Other Segment
Disaggregation of Revenue [Line Items]
Total revenue	10,454,731
Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	454,965,374
Automotive Mirrors & Electronics | Automotive Segment
Disaggregation of Revenue [Line Items]
Total revenue	$ 404,241,628
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]
Total revenue	$ 50,723,746
Fire Protection Products | Other Segment
Disaggregation of Revenue [Line Items]
Total revenue	$ 5,279,658
Fire Protection Products | Other Segment | Minimum
Disaggregation of Revenue [Line Items]
Payment terms	30 days
Fire Protection Products | Other Segment | Maximum
Disaggregation of Revenue [Line Items]
Payment terms	75 days
Windows Products | Other Segment
Disaggregation of Revenue [Line Items]
Total revenue	$ 5,175,073
Dimmable Aircraft Windows | Other Segment | Minimum
Disaggregation of Revenue [Line Items]
Payment terms	30 days
Dimmable Aircraft Windows | Other Segment | Maximum
Disaggregation of Revenue [Line Items]
Payment terms	45 days
U.S. | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	$ 140,312,987
U.S. | Other Products
Disaggregation of Revenue [Line Items]
Total revenue	10,454,731
Germany | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	91,793,541
Japan | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	49,832,997
Other | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	$ 173,025,849