Annual report pursuant to Section 13 and 15(d)

Employee Benefit Plans - Amount Recognized or Expected to be Recognized in Accumulated Other Comprehensive Income (Loss) (Details)

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Employee Benefit Plans - Amount Recognized or Expected to be Recognized in Accumulated Other Comprehensive Income (Loss) (Details) - Foreign Plan - Pension Plan - USD ($)
$ in Thousands
Jun. 30, 2018
Jun. 30, 2017
Losses Recognized in Accumulated Other Comprehensive Income (Loss)    
Unrecognized transition obligation $ 251 $ 190
Unrecognized prior service cost 28 51
Unrealized net loss 23,208 33,477
Amount of losses recognized 23,487 $ 33,718
Losses in Accumulated Other Comprehensive Income (Loss) Expected to be Recognized as Components of Net Periodic Benefit Cost Over Next Fiscal Year    
Unrecognized transition obligation 0  
Unrecognized prior service cost 21  
Unrealized net loss 820  
Amount of losses expected to be recognized $ 841