Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of revenue from customers (Detail)

v3.20.2
Revenue - Summary of revenue from customers (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Revenue from External Customer [Line Items]    
Revenues from customers $ 55 $ 33
Licensing revenue [Member]    
Revenue from External Customer [Line Items]    
Revenues from customers 55 0
Royalty revenue [Member]    
Revenue from External Customer [Line Items]    
Revenues from customers 0 29
Service revenue [Member]    
Revenue from External Customer [Line Items]    
Revenues from customers $ 0 $ 4