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Long-Term Debt - Annual Required Payments of Debt and Contractual Commitments for Interest on Long-term Debt (Detail)
$ in Thousands
Jun. 30, 2018
USD ($)
Long-term Debt, Fiscal Year Maturity [Abstract]  
Debt, 2019 $ 254
Debt, 2020 294
Debt, 2021 313
Debt, 2022 333
Debt, 2023 354
Debt, 2024 and thereafter 1,729
Debt, Total 3,277
Interest, 2019 177
Interest, 2020 176
Interest, 2021 158
Interest, 2022 138
Interest, 2023 117
Interest, 2024 and thereafter 233
Interest, Total $ 999