4. Patents (Tables)

3 Months Ended

Mar. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of intangible assets

The following table presents the scheduled annual aggregate amortization expense as of March 31, 2020:

For the years ending December 31,
(In thousands)
Remainder of 2020	$	2,571
2021		2,851
2022		2,851
2023		2,776
2024		1,405
Thereafter		96
	$	12,550