Annual report pursuant to Section 13 and 15(d)

Patents and Other Intangible Assets - Schedule of Patents and Other Intangible Assets (Details)

v3.21.1
Patents and Other Intangible Assets - Schedule of Patents and Other Intangible Assets (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 0 $ 4,196
Less accumulated amortization 0 (1,301)
Net patent and other intangible assets 0 2,895
Patents    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross 0 981
Customer list    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross 0 2,738
Trade name    
Finite-Lived Intangible Assets [Line Items]    
Intangible assets, gross $ 0 $ 477