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Retirement Plan - Benefits Expected to be Paid in Next Ten Fiscal Years (Detail)
$ in Thousands
Jun. 30, 2016
USD ($)
Defined Benefit Plan, Expected Future Benefit Payments, Fiscal Year Maturity [Abstract]  
2017 $ 653
2018 651
2019 644
2020 634
2021 752
2022 - 2026 $ 4,479