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Payment Obligation in Connection with Hirsch Acquisition (Detail) - USD ($)
$ in Thousands
Mar. 31, 2020
Sep. 30, 2019
Related Party Transaction [Line Items]    
2020 (remaining nine months) $ 10,940  
Hirsch Electronics    
Related Party Transaction [Line Items]    
2020 (remaining nine months)   $ 451
2021   1,083
Present value discount factor   (150)
Total   $ 1,384