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LEASES -Maturities of operating lease liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Jun. 30, 2019
Lessee, Operating Lease, Liability, Payment, Due [Abstract]    
2020 $ 2,108  
2021 2,088  
2022 1,529  
2023 1,324  
2024 1,212  
Thereafter 1,755  
Total undiscounted lease payments 10,016  
Less interest (1,344)  
Present value of lease liabilities $ 8,672  
Future minimum lease payments under non-cancelable operating leases due:    
Total   $ 4,100
2020   2,100
2021   1,300
2022   500
2023   200
2024   $ 38