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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Jun. 30, 2018
Accounting Policies [Abstract]    
Accrued payroll $ 376 $ 389
Customer-related payables 341 334
Accrued rebates 493 327
Other 1,003 1,011
Total $ 2,213 $ 2,061