Revenue (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total revenue	$ 454,981,440	$ 920,401,545
Automotive Segment
Disaggregation of Revenue [Line Items]
Total revenue	444,245,425	899,210,799
Other Segment
Disaggregation of Revenue [Line Items]
Total revenue	10,736,015	21,190,745
Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	444,245,425	899,210,799
Automotive Mirrors & Electronics | Automotive Segment
Disaggregation of Revenue [Line Items]
Total revenue	396,547,385	$ 800,789,013
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	47,698,040	$ 98,421,786
Fire Protection Products | Other Segment
Disaggregation of Revenue [Line Items]
Total revenue	5,813,210	$ 11,092,868
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	4,922,805	$ 10,097,877
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	142,896,639	$ 283,209,626
U.S. | Other Products
Disaggregation of Revenue [Line Items]
Total revenue	10,736,015	21,190,746
Germany | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	85,642,205	177,435,746
Japan | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	48,647,082	98,480,079
Other | Automotive Products
Disaggregation of Revenue [Line Items]
Total revenue	$ 167,059,499	$ 340,085,348