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Debt - Aggregate maturities of long-term debt (Details 1) - USD ($)
$ in Thousands
Jun. 30, 2016
Jun. 30, 2015
Debt Disclosure [Abstract]    
2017 $ 2,907  
2018 2,900  
2019 2,900  
2020 2,900  
2021 272,600  
Total $ 284,207 $ 287,118