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Goodwill and Other Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets | The patents and intangible assets and related change in carrying values are set forth in the tables below: As of September 30, 2019:
Other Intangible Assets | Gross | Accumulated Amortization | Net | Assumed Useful Life
Gentex Patents | $ | 37,160,431 |  | $ | (22,094,953) |  | $ | 15,065,478 |  | Various
Other Intangible Assets |  |  |  |
HomeLink® Trade Names and Trademarks | $ | 52,000,000 |  | $ | — |  | $ | 52,000,000 |  | Indefinite
HomeLink® Technology | 180,000,000 |  | (90,000,000) |  | 90,000,000 |  | 12 years
Existing Customer Platforms | 43,000,000 |  | (25,800,000) |  | 17,200,000 |  | 10 years
Exclusive Licensing Agreement | 96,000,000 |  | — |  | 96,000,000 |  | Indefinite
Total Other Intangible Assets | $ | 371,000,000 |  | $ | (115,800,000) |  | $ | 255,200,000 |  |
Total Patents & Other Intangible Assets | $ | 408,160,431 |  | $ | (137,894,953) |  | $ | 270,265,478 |  |
As of December 31, 2018:
Other Intangible Assets | Gross | Accumulated Amortization | Net | Assumed Useful Life
Gentex Patents | $ | 36,737,434 |  | $ | (21,014,168) |  | $ | 15,723,266 |  | Various
Other Intangible Assets |  |  |  |
HomeLink® Trade Names and Trademarks | $ | 52,000,000 |  | $ | — |  | $ | 52,000,000 |  | Indefinite
HomeLink® Technology | 180,000,000 |  | (78,750,000) |  | 101,250,000 |  | 12 years
Existing Customer Platforms | 43,000,000 |  | (22,575,000) |  | 20,425,000 |  | 10 years
Exclusive Licensing Agreement | 96,000,000 |  | — |  | 96,000,000 |  | Indefinite
Total Other Intangible Assets | $ | 371,000,000 |  | $ | (101,325,000) |  | $ | 269,675,000 |  |
Total Patents & Other Intangible Assets | $ | 407,737,434 |  | $ | (122,339,168) |  | $ | 285,398,266 |  |

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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