Quarterly report pursuant to Section 13 or 15(d)

Intangibles - Components of Intangible Assets (Detail)

v3.19.2
Intangibles - Components of Intangible Assets (Detail) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Finite Lived Intangible Assets [Line Items]    
Intangible assets, Net Carrying Value $ 2,199 $ 2,310
License Agreements [Member]    
Finite Lived Intangible Assets [Line Items]    
Intangible assets, Gross Carrying Value 3,117 3,117
Intangible assets, Accumulated Amortization (918) (807)
Intangible assets, Net Carrying Value $ 2,199 $ 2,310