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Employee Benefit Plans - Change in Fair Value of Level 3 Assets (Details 7) - USD ($)
$ in Thousands
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Change in Fair Value Level 3 assets    
Fair value of plan assets at beginning of year $ 44,032 $ 39,581
Fair value of plan assets at end of year 54,293 44,032
Level 3    
Change in Fair Value Level 3 assets    
Fair value of plan assets at beginning of year 8,989 10,031
Redemptions (3,656) (2,026)
Purchases 15,695 1,280
Change in fair value (515) (296)
Fair value of plan assets at end of year $ 20,513 $ 8,989