Annual report pursuant to Section 13 and 15(d)

Intangibles - Components of Intangible Assets (Detail)

v3.20.4
Intangibles - Components of Intangible Assets (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Finite Lived Intangible Assets [Line Items]    
Intangible assets, Net Carrying Value $ 1,864 $ 2,087
License Agreements [Member]    
Finite Lived Intangible Assets [Line Items]    
Intangible assets, Gross Carrying Value 3,117 3,117
Intangible assets, Accumulated Amortization (1,253) (1,030)
Intangible assets, Net Carrying Value $ 1,864 $ 2,087