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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Accounting Policies [Abstract]    
Accrued payroll $ 389 $ 322
Customer-related payables 334 226
Accrued rebates 327 297
Other 1,011 955
Total $ 2,061 $ 1,800