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Commitments and Contingencies (Operating Leases) (Details) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract]      
Rental expenses $ 652 $ 656 $ 1,049
Operating Leases, Future Minimum Payments Receivable [Abstract]      
2019 510    
2020 376    
2021 20    
2022 0    
2023 0    
Thereafter 0    
Total $ 906