Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2018

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, 2018:

Other Intangible Assets	Gross		Accumulated Amortization		Net		Assumed Useful Life
Gentex Patents	$	36,352,536	$	(19,760,899)	$	16,591,637	various
Other Intangible Assets
HomeLink® Trade Names and Trademarks	$	52,000,000	$	—	$	52,000,000	Indefinite
HomeLink® Technology	180,000,000		(67,500,000)		112,500,000		12 years
Existing Customer Platforms	43,000,000		(19,350,000)		23,650,000		10 years
Exclusive Licensing Agreement	96,000,000		—		96,000,000		Indefinite
Total Other Intangible Assets	$	371,000,000	$	(86,850,000)	$	284,150,000
Total Patents & Other Intangible Assets	$	407,352,536	$	(106,610,899)	$	300,741,637

        As of December 31, 2017:

Other Intangible Assets	Gross		Accumulated Amortization		Net		Assumed Useful Life
Gentex Patents	$	34,847,029	$	(18,943,554)	$	15,903,475	various
HomeLink® Trade Names and Trademarks	$	52,000,000	$	—	$	52,000,000	Indefinite
HomeLink® Technology	180,000,000		(63,750,000)		$	116,250,000	12 years
Existing Customer Platforms	43,000,000		(18,275,000)		$	24,725,000	10 years
Exclusive Licensing Agreement	96,000,000		—		$	96,000,000	Indefinite
Total other identifiable intangible assets	$	371,000,000	$	(82,025,000)	$	288,975,000
Total Patents & Other Intangible Assets	$	405,847,029	$	(100,968,554)	$	304,878,475