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Consolidated Balance Sheets (Parenthetical)
$ in Thousands
Sep. 30, 2016
USD ($)
shares
Sep. 30, 2016
€ / shares
Jun. 30, 2016
USD ($)
shares
Jun. 30, 2016
€ / shares
Current Assets        
Allowance for doubtful accounts | $ $ 564   $ 490  
Stockholders' Equity        
Preferred shares, par value | € / shares   € 0.01   € 0.01
Preferred shares, shares authorized 100,000,000   100,000,000  
Preferred shares, shares issued 0   0  
Preferred shares, shares outstanding 0   0  
Ordinary shares, par value | € / shares   € 0.01   € 0.01
Ordinary shares, shares authorized 100,000,000   100,000,000  
Ordinary shares, shares issued 44,080,627   44,080,627  
Ordinary shares, shares outstanding 31,647,134   31,536,732  
Treasury shares 12,433,493   12,543,895