Quarterly report pursuant to Section 13 or 15(d)

Revenue - Summary of revenue from customers (Detail)

v3.20.4
Revenue - Summary of revenue from customers (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Revenue from External Customer [Line Items]        
Revenues from customers $ 1 $ 77 $ 56 $ 110
Licensing revenue [Member]        
Revenue from External Customer [Line Items]        
Revenues from customers 1 61 56 61
Royalty revenue [Member]        
Revenue from External Customer [Line Items]        
Revenues from customers 0 16 0 45
Service revenue [Member]        
Revenue from External Customer [Line Items]        
Revenues from customers $ 0 $ 0 $ 0 $ 4