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Commitments and Contingencies (Pre-Acquisition Contingencies and Receivables) (Details) - Network1 - USD ($)
$ in Thousands
Jun. 30, 2021
Jun. 30, 2020
Assets    
Prepaid expenses and other assets (current) $ 16 $ 14
Other assets (noncurrent) 3,998 3,652
Liabilities    
Other current liabilities 16 14
Other long-term liabilities $ 3,998 $ 3,652