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Long-Term Debt - Summary of Long-Term Debt (Detail) - USD ($)
$ in Thousands
Sep. 30, 2018
Jun. 30, 2018
Debt Instrument [Line Items]    
Less unamortized debt issuance costs $ (213) $ (219)
Less current maturities (260) (255)
Long-term Debt 2,737 2,803
Trace RDA Loan [Member]    
Debt Instrument [Line Items]    
RDA Loan $ 3,210 $ 3,277