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Fair Value Measurements (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Contingent consideration on acquisitions $ (11,751) $ (9,172)  
Level 1 | Fair values      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivatives  
Contingent consideration on acquisitions  
Level 2 | Fair values      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivatives 2,686 2,655  
Contingent consideration on acquisitions  
Level 3 | Fair values      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Derivatives  
Contingent consideration on acquisitions $ (7,644) $ (6,745) $ (5,465)