Quarterly report pursuant to Section 13 or 15(d)

Revenue Recognition from Contracts with Customers (Details)

v3.20.2
Revenue Recognition from Contracts with Customers (Details) - USD ($)
$ in Thousands
3 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Revenue Recognition from Contracts with Customers (Details) [Line Items]    
Contract liabilities related to sale of amplifiers $ 190  
Opening contract liability   $ 5
Contract balance $ 51  
Revenue expected to be recognized   900
MEMS [Member]    
Revenue Recognition from Contracts with Customers (Details) [Line Items]    
Opening contract liability   $ 94