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Segment Reporting
9 Months Ended
Sep. 30, 2019
Segment Reporting [Abstract]  
Segment Reporting Segment Reporting
The Company's automotive segment develops and manufactures digital vision and connected car products and electronics, including: automatic-dimming rearview mirrors with and without electronic features; non-auto dimming rearview mirrors with and without electronic features; and other electronics. The Company also develops and manufactures variably dimming windows for the aerospace industry and fire protection products for the commercial construction industry, which are combined into the "Other" segment shown below.

Three Months Ended September 30,Nine Months Ended September 30,
2019201820192018
Revenue:
Automotive Products$464,280,707  $449,184,447  $1,376,704,413  $1,348,395,245  
Other13,480,710  11,068,986  38,357,355  32,259,733  
Total$477,761,417  $460,253,433  $1,415,061,768  $1,380,654,978  
Income from operations:
Automotive Products$123,342,538  $124,351,499  $364,590,462  $373,071,852  
Other4,793,142  3,076,412  13,046,517  9,554,396  
Total$128,135,680  $127,427,911  $377,636,979  $382,626,248