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Employee Benefit Plans - Estimated future benefit payments including benefits attributable to future service (Details 4)
$ in Thousands
Jun. 30, 2015
USD ($)
Compensation and Retirement Disclosure [Abstract]  
2016 $ 1,685
2017 1,938
2018 2,173
2019 2,433
2020 2,724
2021-2024 $ 17,886