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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2017
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 March 31, 2017:
Other Intangible Assets | Gross | Accumulated Amortization | Net | Assumed Useful Life
Gentex Patents | $ | 33,620,379 |  | $ | (17,147,912 | ) | $ | 16,472,467 |  | various
Other Intangible Assets |  |  |  |
HomeLink® Trade Names and Trademarks | $ | 52,000,000 |  | $ | — |  | $ | 52,000,000 |  | Indefinite
HomeLink® Technology | 180,000,000 |  | (52,500,000 | ) | 127,500,000 |  | 12 years
Existing Customer Platforms | 43,000,000 |  | (15,050,000 | ) | 27,950,000 |  | 10 years
Exclusive Licensing Agreement | 96,000,000 |  | — |  | 96,000,000 |  | Indefinite
Total Other Intangible Assets | $ | 371,000,000 |  | $ | (67,550,000 | ) | $ | 303,450,000 |  |
Total Patents & Other Intangible Assets | $ | 404,620,379 |  | $ | (84,697,912 | ) | $ | 319,922,467 |  |
As of December 31, 2016:
Other Intangible Assets | Gross | Accumulated Amortization | Net | Assumed Useful Life
Gentex Patents | $ | 33,002,468 |  | $ | (16,481,728 | ) | $ | 16,520,740 |  | various
HomeLink® Trade Names and Trademarks | $ | 52,000,000 |  | $ | — |  | $ | 52,000,000 |  | Indefinite
HomeLink® Technology | 180,000,000 |  | (48,750,000 | ) | $ | 131,250,000 |  | 12 years
Existing Customer Platforms | 43,000,000 |  | (13,975,000 | ) | $ | 29,025,000 |  | 10 years
Exclusive Licensing Agreement | 96,000,000 |  | — |  | $ | 96,000,000 |  | Indefinite
Total other identifiable intangible assets | $ | 371,000,000 |  | $ | (62,725,000 | ) | $ | 308,275,000 |  |
Total Patents & Other Intangible Assets | $ | 404,002,468 |  | $ | (79,206,728 | ) | $ | 324,795,740 |  |

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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