Patents and Other Intangible Assets (Tables)
|12 Months Ended|
Dec. 31, 2020
|Goodwill and Intangible Assets Disclosure [Abstract]|
|Schedule of Patents and Other Intangible Assets||
Patents and other intangible assets consist of the following at December 31, 2020 and 2019 (in thousands):
Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef