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Goodwill and Other Intangible Assets - Estimated Future Annual Amortization Expense (Details)
$ in Thousands
Jun. 30, 2019
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
Estimated annual amortization expense, Year 2020 $ 6,552
Estimated annual amortization expense, Year 2021 6,552
Estimated annual amortization expense, Year 2022 6,552
Estimated annual amortization expense, Year 2023 6,552
Estimated annual amortization expense, Year 2024 $ 6,552