Annual report pursuant to Section 13 and 15(d)

Intangible Assets - Components of Intangible Assets (Detail)

v3.19.1
Intangible Assets - Components of Intangible Assets (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Mar. 31, 2018
Mar. 31, 2017
Mar. 31, 2016
Finite Lived Intangible Assets [Line Items]        
Cost $ 5,826 $ 5,826    
Accumulated Amortization (5,826) (4,595)    
Net 0 1,231 $ 2,647 $ 12,490
Software        
Finite Lived Intangible Assets [Line Items]        
Cost 5,826 5,826    
Accumulated Amortization (5,826) (4,595)    
Net $ 0 $ 1,231